% \iffalse meta-comment
%
% inslrmin.dtx
% Copyright 1999 Peter R. Wilson
%
% This program is provided under the terms of the
% LaTeX Project Public License distributed from CTAN
% archives in directory macros/latex/base/lppl.txt.
%
% Author: Peter Wilson (CUA) (now at: peter.r.wilson@boeing.com)
% 
% If you do not have the docmfp package (available from CTAN in
% tex-archive/macros/latex/contrib/supported), comment out the
% \usepackage{docmfp} line below and uncomment the line following it. 
% 
%<*driver>
\documentclass{ltxdoc}
\usepackage{docmfp}
%%%%%% \providecommand{\DescribeVariable}[1]{} \newenvironment{routine}[1]{}{}
\EnableCrossrefs
\CodelineIndex
%% comment out next line to see the code
\OnlyDescription
\setcounter{StandardModuleDepth}{1}
\begin{document}
  \DocInput{inslrmin.dtx}
\end{document}
%</driver>
%
% \fi
%
% \CheckSum{134}
%
% \DoNotIndex{\',\.,\@M,\@@input,\@addtoreset,\@arabic,\@badmath}
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% \DoNotIndex{\@dotsep,\@empty,\@float,\@gobble,\@gobbletwo,\@ignoretrue}
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%
% \changes{v1.0}{2002/12/30}{First public release}
%
% \def\fileversion{v1.0}
% \def\filedate{2002/12/30}
% \newcommand*{\Lpack}[1]{\textsf {#1}}           ^^A typeset a package
% \newcommand*{\Lopt}[1]{\textsf {#1}}            ^^A typeset an option
% \newcommand*{\file}[1]{\texttt {#1}}            ^^A typeset a file
% \newcommand*{\Lcount}[1]{\textsl {\small#1}}    ^^A typeset a counter
% \newcommand*{\pstyle}[1]{\textsl {#1}}          ^^A typeset a pagestyle
% \newcommand*{\Lenv}[1]{\texttt {#1}}            ^^A typeset an environment
% \newcommand*{\AD}{\textsc{ad}}
% \newcommand*{\thisfont}{Insular Minuscule}
%
% \title{The \Lpack{Insular Minuscule} fonts\thanks{This
%        file has version number \fileversion, last revised
%        \filedate.}}
%
% \author{%
% Peter Wilson\\
% Catholic University of America \\
% Now at \texttt{peter.r.wilson@boeing.com}
% }
% \date{\filedate}
% \maketitle
% \begin{abstract}
%    The \Lpack{inslrmin} and \Lpack{allimin} packages provide a set of 
% Metafont \thisfont{} book-hands 
% as used
% for manuscripts from the 6th century onwards. This is one in a series
% of manuscript fonts.
% \end{abstract}
% \tableofcontents
% \listoftables
%
%
% 
%
% \section{Introduction}
%
%    The \Lpack{inslrmin} and \Lpack{allimin} packages provide a Metafont~\cite{METAFONT} version
% of the \thisfont{} manuscript book-hand that was in use from the
% sixth century~\AD{} onwards. It is part of a project to provide fonts
% covering the major manuscript hands between the first century~\AD{} and
% the invention of printing. The principal resources used in this project
% are listed in the Bibliography.
%
% This manual is typeset according to the conventions of the
% \LaTeX{} \textsc{docstrip} utility which enables the automatic
% extraction of the \LaTeX{} macro source files~\cite{GOOSSENS94}.
% The \Lpack{docmfp} package is used for documenting the Metafont portions
% of the distribution~\cite{DOCMFP}.
%
%    Section~\ref{sec:usc} describes the usage of the package.
% Commented code for the fonts is in Sections~\ref{sec:mf} and~\ref{sec:fd}
% and source code for the package is in Section~\ref{sec:code}.
%
% \subsection{Manuscript book-hands}
%
% Before the invention of printing all books were written by hand. The book-hands
% used by the scribes and copyists for the manuscripts changed as time 
% went on. Table~\ref{tab:1} lists some of the common book-hands which were used
% between the 1st and 15th centuries. The later book-hands formed the basis of the
% fonts used by the early printers, which in turn form the basis of the printing
% fonts in use today.
%
%    The manuscript book-hands were written with a broad nibbed reed or quill
% pen. Among the distinguishing characteristics of a hand, apart from the 
% actual shape of the letters, are the angle of the pen (which controls the
% variation between thick and thin strokes) and the height of a letter compared
% to the width of the nib. The lower the ratio of the letter height to nib
% width, the more condensed is the script. The scripts also varied in their
% typical height. 
%
%    Table~\ref{tab:1} gives an `average' x-height for each
% script, which I obtained by measuring a sample of photographs of
% manuscripts written in the various hands. About a dozen examples
% of each book-hand were measured. This figure should not be taken too
% seriously.
% 
%    There was not a sharp division between the use of one hand and another.
% Many manuscripts exhibit a variety of hands in the same document. For example,
% the scribe writing in an Uncial hand may have used Roman Rustic letters
% for capitals. Usually the same pen was used for the two different scripts.
%
%    Generally speaking, as a hand got older it became more embelished, and 
% therefore took longer to write. As this happened a new hand would appear that
% was faster, and which would eventually make the earlier one obsolete.
%
%    Many of the book-hands were single-cased; that is, they did not have an
% upper- and lower-case as we do nowadays in Western scripts. On the other
% hand, a script might be majuscule or minuscule. A \textit{majuscule} script
% is one, like our upper-case, where the letters are drawn between two lines
% and are of a uniform height with no ascenders or descenders. 
% A \textit{minuscule} script, like our lower-case, is drawn between four lines 
% and has ascenders and  descenders.
%
% \begin{table}
% \centering
% \caption{The main manuscript book-hands} \label{tab:1}
% \begin{tabular}{lccccc} \hline
% Name                  & Century  & x-height & Height     & Pen  & Normalised \\
%                       &          & (mm)   & (nib widths) & angle & height  \\ \hline
% Roman Rustic          & 1--6     & 5.7    & 4--6         & 45     & 1.90 \\
% Uncial                & 3--6     & 4.1    & 4--5         & 30     & 1.37 \\
% Half Uncial           & 3--9     & 3.2    & 3--6         & 20--30 & 1.07 \\
% Artificial Uncial     & 6--10    & 4.2    & 3--6         & 10     & 1.40 \\
% Insular majuscule     & 6--9     & 4.2    & 5            & 0--20  & 1.40 \\
% Insular minuscule     & 6 onward & 4.1    & 5--6         & 45--70 & 1.37 \\
% Carolingian minuscule & 8--12    & 3.0    & 3--5         & 45     & 1.00 \\
% Early Gothic          & 11--12   & 3.8    & 4--6         & 20--45 & 1.27 \\
% Gothic Textura        & 13--15   & 3.9    & 3--5         & 30--45 & 1.30 \\
% Gothic Prescius       & 13 onward & 3.3   & 4--5         & 45     & 1.10 \\
% Rotunda               & 13--15   & 3.2    & 4--6         & 30     & 1.07 \\
% Humanist minuscule    & 14 onward & 3.0   & 4--5         & 30--40 & 1.00 \\ \hline
% \end{tabular}
% \end{table}
%
%    During the period under consideration arabic numerals were effectively
% not used. At the beginning they were unknown and even though some knew
% of them towards the end, the glyphs used for them are not recognisable ---
% to me they look somewhat like cryllic letters --- and each locality
% and time had its own highly individualistic rendering. The general rule
% when using one of these book-hands is to write all numbers using
% roman numerals.
%
%    The Roman alphabet consisted of 23 capital letters --- the J, U and W 
% were absent. The book-hands initially used both a `u' and a `v' interchangeably
% but by the 10th century the practice had become to use the `v' before a vowel 
% and the `u' otherwise. The letter corresponding to the W sound appeared 
% in England around the 7th century in
% the form of the runic \textit{wen} character and by about the 11th century
% the `w' chacter was generally used. The `J' is the newest letter of all, not
% appearing until about the mid 16th century.
%
%    In the first century punctuation was virtually unknown, and typically
% would not even be any additional space between individual words, never
% mind denoting ends of sentences. Sometimes a dot at mid-height would be
% used as a word seperator, or to mark off the end of a paragraph. Effectively
% a text was a continuous stream of letters. By the time that printing was
% invented, though, all of our modern punctuation marks were being used.
%
%    Among all these manuscript hands, the Carolingian minuscule is the
% most important as our modern fonts are based on its letter shapes, and it is
% also at this point in time where the division occured between the black letter
% scripts as used even today in Germany, and the lighter fonts used elesewhere.
% The Rotunda and Humanist minuscule hands were developed in Italy and were
% essentially a rediscovery of the Carolingian minusucle. Guthenberg took the
% Gothic scripts as the model for his types. Later printers, 
% such as Nicholas Jenson of Venice,
% took the Humanist scripts as their models.
%
%
% \subsection{The \thisfont{} script}
%
%    The \thisfont{} hand has been in use from the sixth century.
% It was originally developed in Ireland by St.~Patrick's monks
% as a less formal and faster hand than the Insular majuscule,
% the most famous example of which is the \textit{Book of Kells}.
%
%    Although the letter shapes in this book-hand are principally of
% a lower-case form, there are a few that are shaped like capital letters.
% For example, the `n' appeared as both an `n' and as an `N',
% while the `f' and `r' were written like `F' and `R'.
% Some letters had multiple forms. As well as the `n' the `r' could be written
% as either `r' or `R'.
%
%    The letters were written very close together and the scibes used many
% adhoc ligatures. A favourite was using a long `e' before a letter
% with a bar at the x-height, and joining the crossbar of the `e' to
% the bar of the following letter, for instance the pair `eg'. 
% I have only provided the ampersand, `\&', as a ligature, standing for
% `et' which is the Latin for `and'.
% Letters were also stretched if a line
% needed some filling. For example, the capital form of the `N' might be
% stretched to 2 or 3 times its normal width.
%
% Usually the
% lettering in a manuscript was all one size. If the scribe felt the need
% for `capital' letters then, using the same pen, would either write a larger
% \thisfont{} letter or a letter from one of the more formal book-hands. 
%    I have provided a set of `capital' letters that are only a little larger
% than the normal letters for use in running text. 
% During the time the \thisfont{} script was used the alphabet only had 24 
% letters. I have included the missing J.
%
%    Arabic numerals were unknown at this time, so all numbers were written
% using the roman numbering system. I have provided \thisfont{} versions of
% the arabic digits.
%
%    Punctuation was used, but not with the frequency of today.
% A sentence might be ended with
% a dot at mid-height or a paragraph ended with a colon, also at mid-height.
% The comma was was  a small 
% slash; the semi-colon was known, as was the single quotation 
% mark which was represented by a raised comma.
%
%
% \section{The \Lpack{inslrmin} and \Lpack{allimin} packages} \label{sec:usc}
%
%     The \thisfont{} font family is called |imin|. The font is supplied in both
% OT1 and T1 encodings.
%
% \subsection{The \Lpack{inslrmin} package}
%
%    This is intended for the occasions when some short pieces of text have
% to be written in \thisfont{} while the majority of the document is in another
% font. The normal baselineskips are used.
%
% \DescribeMacro{\iminfamily}
%    The |\iminfamily| declaration starts typesetting with the \thisfont{} fonts.
% Use of the \thisfont{} font will continue until either there is another |\...family|
% declaration or the current group (e.g., environment) is closed.
%
% \DescribeMacro{\textimin}
%    The command |\textimin{|\meta{text}|}| will typeset \meta{text} using the
% \thisfont{} fonts.
%
% \subsection{The \Lpack{allimin} package}
%
%
%    This package is for when the entire document will be typeset with the
% \thisfont{} font. The baselineskips are set to those appropriate to the
% book-hand. 
%
%    This is a minimalist package. Apart from declaring \thisfont{} to be the
% default font and setting the baselineskips appropriately, it makes no other
% alterations. 
% Vertical spacing
% before and after section titles and before and after lists, etc., will be
% too small as the \LaTeX{} design assumes a font comparable in size to
% normal printing fonts, and the book-hand is much taller.
% To capture more of the flavour of the time, all numbers
% should be written using roman numerals. 
% The \Lpack{romannum} package~\cite{ROMANNUM}
% can be used so that \LaTeX{} will typeset the numbers that it generates,
% like sectioning or caption numbers, using roman numerals instead of arabic 
% digits. 
%
% \DescribeMacro{\cmrfamily}
% \DescribeMacro{\textcmr}
% \DescribeMacro{\cmssfamily}
% \DescribeMacro{\textcmss}
% \DescribeMacro{\cmttfamily}
% \DescribeMacro{\textcmtt}
%    The |...family| declarations start typesetting with the Computer Modern Roman
% (|\cmrfamily|), the Computer Modern Sans (|\cmssfamily|), and the Computer
% Modern Typewriter (|\cmttfamily|) font families. The |\textcm..{|\meta{text}|}|
% commands will typeset \meta{text} in the corresponding Computer Modern font.
%
%    The \Lpack{allimin} package automatically loads the \Lpack{inslrmin} package,
% so its font commands are available if necessary.
%
% \StopEventually{
% \bibliographystyle{alpha}
% \renewcommand{\refname}{Bibliography}
% \begin{thebibliography}{GMS94}
% \addcontentsline{toc}{section}{\refname}
%
% \bibitem[And69]{ANDERSON69}
% Donald M.~Anderson.
% \newblock {\em The Art of Written Forms: The Theory and Practice of Calligraphy}.
% \newblock Holt, Rinehart and Winston, 1969.
%
% \bibitem[Bol95]{BOLOGNA95}
% Giulia Bologna.
% \newblock {\em Illuminated Manuscripts: The Book before Gutenberg}.
% \newblock Crescent Books, 1995.
%
% \bibitem[Day95]{DAY95}
% Lewis F.~Day.
% \newblock {\em Alphabets Old \& New}.
% \newblock (3rd edition originally published by B.~T.~Batsford, 1910) 
% \newblock Senate, 1995.
%
% \bibitem[Dro80]{DROGIN80}
% Marc Drogin.
% \newblock {\em Medieval Calligraphy: Its History and Technique}.
% \newblock Allenheld, Osmun \& Co., 1980.
%
% \bibitem[Dru95]{DRUCKER95}
% Johanna Drucker.
% \newblock {\em The Alphabetic Labyrinth}.
% \newblock Thames \& Hudson, 1995.
%
% \bibitem[Fir93]{FIRMAGE93}
% Richard A.~Firmage.
% \newblock {\em The Alphabet Abecedarium}.
% \newblock David R~Goodine, 1993.
%
% \bibitem[Fli98]{LETTRINE}
% Daniel Flipo.
% \newblock {\em The LETTRINE package}.
% \newblock (Available from CTAN in \texttt{macros/latex/contrib/supported}). 
% \newblock 1998.
%
% \bibitem[Har95]{HARRIS95}
% David Harris.
% \newblock {\em The Art of Calligraphy}.
% \newblock DK Publishing, 1995.
%
% \bibitem[Jen95]{BETON}
% Frank Jensen.
% \newblock {\em The BETON package}.
% \newblock (Available from CTAN in \texttt{macros/latex/contrib/supported}). 
% \newblock 1995.
%
% \bibitem[Joh71]{JOHNSTON75}
% Edward Johnston (ed. Heather Child).
% \newblock {\em Formal Penship and Other Papers}.
% \newblock Penthalic, 1971.
%
% \bibitem[Knu87]{CM}
% Donald E.~Knuth.
% \newblock {\em Computer Modern Typefaces}.
% \newblock Addison-Wesley, 1987.
%
% \bibitem[Knu92]{METAFONT}
% Donald E.~Knuth.
% \newblock {\em The METAFONTbook}.
% \newblock Addison-Wesley, 1992.
%
% \bibitem[GMS94]{GOOSSENS94}
% Michel Goossens, Frank Mittelbach, and Alexander Samarin.
% \newblock {\em The LaTeX Companion}.
% \newblock Addison-Wesley Publishing Company, 1994.
%
% \bibitem[Tho75]{THOMAS75}
% Alan G.~Thomas.
% \newblock {\em Great Books and Book Collectors}.
% \newblock Weidenfield and Nichoson, 1975.
%
% \bibitem[Wil99]{DOCMFP}
% Peter R.~Wilson.
% \newblock {\em The DOCMFP Package}.
% \newblock (Available from CTAN in \texttt{macros/latex/contrib/supported}). 
% \newblock 1999.
%
% \bibitem[Wil99b]{ROMANNUM}
% Peter R.~Wilson.
% \newblock {\em The ROMANNUM Package}.
% \newblock (Available from CTAN in \texttt{macros/latex/contrib/supported}). 
% \newblock 1999.
%
% \end{thebibliography}
% }
%
% \section{The Metafont code} \label{sec:mf}
%
%
%    As previously noted, this work is part of a larger project to provide
% fonts covering the main manuscript book-hands. As such, one of the
% aims is to produce a coordinated set of fonts, especially as multiple
% hands might be used in a single document. 
%
%    Noting that the hands tend to be somewhat larger than the typical 10pt
% size (where the x-height is approximately 1.5mm) used for modern books, 
% I have also designed the fonts
% at a larger than normal size, then applied some non-linear factors when reducing
% them down to a 10pt size.
%    Further, I have used the height of the Carolingian minuscule as a 
% normalising factor when deciding on the absolute height of any particular
% script. The x-height of the Carolingian font is made equal to the
% x-height of the Computer Modern Roman (CMR) font.
%
%    Modern fonts are effectively drawn. That is, the outline of the letter is
% drawn carefully and the center is filled with ink. This is shown to good
% effect in the Metafont code for the Computer Modern fonts~\cite{CM}.
% In contrast, the manuscript letters were inked by single pen strokes in
% a calligraphic manner. I have tried to repeat this calligraphic style
% in the Metafont code.
%
%    As much as possible I have tried to use parameter values from the
% Computer Modern Roman (CMR) fonts in order to reduce possible
% infelicities if the CM and manuscript fonts are used together. However,
% few of the CMR parameters are applicable to the calligraphic style.
%
%
% \subsection{The parameter file}
%
%    We deal with the parameter files first, and start by announcing
% what they are for. The \thisfont{} font comes in three sizes and also as a normal
% and a bold font.
%    \begin{macrocode}
%<*base7|base10|base17|base7b|base10b|base17b>
%<base7>%%% IMIN7.MF    Insular Minuscule at 7 point design size.
%<base10>%%% IMIN10.MF  Insular Minuscule at 10 point design size.
%<base17>%%% IMIN17.MF  Insular Minuscule at 17 point design size.
%<base7b>%%% IMINB7.MF    Insular Minuscule Bold at 7 point design size.
%<base10b>%%% IMINB10.MF  Insular Minuscule Bold at 10 point design size.
%<base17b>%%% IMINB17.MF  Insular Minuscule Bold at 17 point design size.
%
%    \end{macrocode}
%    Parameters from CMR are used as much as possible. We also
% make sure that \Lpack{cmbase} is loaded as well as plain Metafont.
%    \begin{macrocode}
if unknown cmbase: input cmbase fi

%<base7>font_identifier:="IMIN"; font_size 7pt#;
%<base10>font_identifier:="IMIN"; font_size 10pt#;
%<base17>font_identifier:="IMIN"; font_size 17.28pt#;
%<base7b>font_identifier:="IMINB"; font_size 7pt#;
%<base10b>font_identifier:="IMINB"; font_size 10pt#;
%<base17b>font_identifier:="IMINB"; font_size 17.28pt#;

%    \end{macrocode}
%
% \DescribeVariable{jutstretch}
%    The CMR scaling for lowercase serifs wrt 17pt size.
%    \begin{macrocode}
%<base7|base7b> jutstretch:=1.19; 
%<base10|base10b> jutstretch:=1.152; 
%<base17|base17b> jutstretch:=1.0;
%    \end{macrocode}
%
% \DescribeVariable{stemstretch}
%    The CMR scaling for lowercase stem widths wrt 17pt size.
%    \begin{macrocode}
%<base7|base7b> stemstretch:=1.50;
%<base10|base10b> stemstretch:=1.31;
%<base17|base17b> stemstretch:=1.0;
%    \end{macrocode}
%
% \DescribeVariable{caprat}
%    The scaling for `capitals' wrt `lowercase'. This is pretty much a guess
% (the ratio for CMR10 is 1.59).
%    \begin{macrocode}
 caprat:=1.5;          % ratio of capital height to minuscule height
%    \end{macrocode}
%
% \DescribeVariable{cap_jutstretch}
%    The CMR scaling for uppercase serifs wrt 17pt size.
%    \begin{macrocode}
%<base7|base7b> cap_jutstretch:=1.3;   
%<base10|base10b> cap_jutstretch:=1.2;   
%<base17|base17b> cap_jutstretch:=1.0;   
%    \end{macrocode}
%
% \DescribeVariable{cap_stemstretch}
%    The CMR scaling for uppercase stem width wrt 17pt size.
%    \begin{macrocode}
%<base7|base7b> cap_stemstretch:=1.45;  
%<base10|base10b> cap_stemstretch:=1.31;  
%<base17|base17b> cap_stemstretch:=1.0;  
%    \end{macrocode}
%
% \DescribeVariable{bfudge}
%    Letter width scaling for bold font wrt normal font.
%    \begin{macrocode}
%<base7|base10|base17> bfudge:=1.0;
%<base7b|base10b|base17b> bfudge:=1.2;
%    \end{macrocode}
%
% \DescribeVariable{szfudge}
%    Width scaling wrt 17pt letter width.
%    \begin{macrocode}
%<base7|base7b> szfudge:=1.18; 
%<base10|base10b> szfudge:=1.0; 
%<base17|base17b> szfudge:=1.0; 
%    \end{macrocode}
%
% \DescribeVariable{hstretch}
%    Horizontal stretching factor wrt 17pt size letter width.
%    \begin{macrocode}
 hstretch:=szfudge*bfudge;
%    \end{macrocode}
%
% \DescribeVariable{carol_height}
%    The x-height of the Carolingian minuscule font.
%    \begin{macrocode}
%<base7|base7b> carol_height#:=108.5/36pt#; 
%<base10|base10b> carol_height#:=155/36pt#; 
%<base17|base17b> carol_height#:=268/36pt#; 
%    \end{macrocode}
%
% \DescribeVariable{vstretch}
%    The height of this font wrt the Carolingian font.
%    \begin{macrocode}
 vstretch:=1.37;   

%    \end{macrocode}
%
% \DescribeVariable{x_height} 
%    The x-height of lower case letters. Scaled from the Carolingian font.
%    \begin{macrocode}
 x_height#:=vstretch*carol_height#; 
%    \end{macrocode}
%
% \DescribeVariable{u}
%    The unit width. The CMR values are used.
%    \begin{macrocode}
%<base7> u#:=15.5/36pt#;  
%<base10> u#:=20/36pt#;  
%<base17> u#:=32.5/36pt#;  
%<base7b> u#:=17.9/36pt#;  
%<base10b> u#:=23/36pt#;  
%<base17b> u#:=37/36pt#;  
%    \end{macrocode}
%
% \DescribeVariable{width_adj}
% \DescribeVariable{serif_fit}
% \DescribeVariable{cap_serif_fit}
% \DescribeVariable{letter_fit}
%    The majority of these parameters and values are constant.
% They are for fine adjustements of characters. The CM values are used.
%    \begin{macrocode}
 width_adj#:=0pt#;         % width adjustment for certain characters
 serif_fit#:=0pt#;         % extra sidebar near lowercase serifs
%<base7|base7b> cap_serif_fit#:=3.5/36pt#;  % extra sidebar near uppercase serifs
%<base10|base10b> cap_serif_fit#:=5/36pt#;  % extra sidebar near uppercase serifs
%<base17|base17b> cap_serif_fit#:=8/36pt#;  % extra sidebar near uppercase serifs
%<base7|base7b> letter_fit#:=0pt#;        % extra space added to all sidebars
%<base10|base10b> letter_fit#:=0pt#;        % extra space added to all sidebars
%<base17|base17b> letter_fit#:=-0.1pt#;        % extra space added to all sidebars
%    \end{macrocode}
%
% \DescribeVariable{sb}
%    A length used for adjusting the side bearings of characters.
%    \begin{macrocode}
%<base7|base7b> sb#:=1/2u#;                   % unit for side bearings
%<base10|base10b> sb#:=1/2u#;                 % unit for side bearings
%<base17|base17b> sb#:=1/2u#;                 % unit for side bearings

%    \end{macrocode}
%
% \DescribeVariable{cap_height} 
%    The height of capital letters.
%    \begin{macrocode}
%<base7|base7b> cap_height#:=172.2/36pt#;        % height of caps
%<base10|base10b> cap_height#:=246/36pt#;        % height of caps
%<base17|base17b> cap_height#:=425/36pt#;        % height of caps
%    \end{macrocode}
%
% \DescribeVariable{thickfudge}
%    The reciprocal of the font height in nib widths. Normal font height
% is 6 nib widths and the bold font height is 5 nib widths.
%    \begin{macrocode}
%<base7|base10|base17> thickfudge:=1/6;     
%<base7b|base10b|base17b> thickfudge:=1/5;     
%    \end{macrocode}
%
% \DescribeVariable{thinfudge}
%    The nib sharpness.
%    \begin{macrocode}
thinfudge:=1/6;      
%    \end{macrocode}
%
% \DescribeVariable{thick}
%    The maximum nib width. 
% That is, the width of the thickest line that can be penned.
%    \begin{macrocode}
thick#:=stemstretch*thickfudge*x_height#;    % max pen breadth
%    \end{macrocode}
%
% \DescribeVariable{thin}
%    The nib thinness. 
% That is, the width of the thinnest line that can be penned.
%    \begin{macrocode}
thin#:=thinfudge*thick#;  
%    \end{macrocode}
%
% \DescribeVariable{pangle}
%  The pen angle (in degrees).
%    \begin{macrocode} 
pangle:=45;                  % pen angle
%    \end{macrocode}
%
% \DescribeVariable{ascratio}
%    The height of lower case ascenders wrt |x_height|.
%    \begin{macrocode}
  ascratio:=6/4;
%    \end{macrocode}
%
% \DescribeVariable{asc_height} 
%    The height of lower case ascenders.
%    \begin{macrocode}
  asc_height#:=ascratio*x_height#;
%    \end{macrocode}
%
% \DescribeVariable{descratio}
%    The depth of lower case descenders wrt |x_height|.
%    \begin{macrocode}
  descratio:=5/4;
%    \end{macrocode}
%
% \DescribeVariable{desc_depth} 
%    The depth of lower case descenders.
%    \begin{macrocode}
  desc_depth#:=descratio*x_height#;
%    \end{macrocode}
%
% \DescribeVariable{fig_height} 
%    The height of numerals. Make these midway between normal and capital
% letters.
%    \begin{macrocode}
  fig_height#:=(0.5[1,caprat])*x_height#;
%    \end{macrocode}
%
% \DescribeVariable{fig_width} 
%    The width of numerals. All numerals are the same width (roughly, an `o').
%    \begin{macrocode}
  fig_width#:=hstretch*(x_height#);
%    \end{macrocode}
%
% \DescribeVariable{body_height} 
%    The height of the tallest character.
%    \begin{macrocode}
 body_height#:=caprat*asc_height#;    
%    \end{macrocode}
%
% \DescribeVariable{body_depth} 
%    The depth of the lowest character.
%    \begin{macrocode}
 body_depth#:=caprat*desc_depth#;    
%    \end{macrocode}
%
% \DescribeVariable{half_height} 
%    Half the normal letter height.
%    \begin{macrocode}
 half_height#:=1/2x_height#;    % half the height of x height letters

%    \end{macrocode}
%
% \DescribeVariable{side}
%    We might be using a square for the character design.
%    \begin{macrocode}
side#:=x_height#;     
%    \end{macrocode}
%
% \DescribeVariable{rule_thickness}
%    Thickness of rules (in math symbols). The CMR values are used.
%    \begin{macrocode}
%<base7|base7b> rule_thickness#:=.34pt#; 
%<base10|base10b> rule_thickness#:=.4pt#; 
%<base17|base17b> rule_thickness#:=.6pt#; 

%    \end{macrocode}
%
% \DescribeVariable{jutfudge}
%    Controls the protrusion of serifs.
%    \begin{macrocode}
jutfudge:= 3/4;
%%%%jutfudge:= 1/2;
%    \end{macrocode}
%
% \DescribeVariable{jut} 
%    The lowercase serif protrusion.
%    \begin{macrocode}
jut#:=jutstretch*jutfudge*thick#; 
%    \end{macrocode}
%
% \DescribeVariable{srad}
%    |srad| with |0 < srad < 1| controls the serif radius.
%    \begin{macrocode}
srad:=0.8;   % was 0.5
%    \end{macrocode}
%
% \DescribeVariable{trijut}
%    The lowercase triangular serif protrusion.
%    \begin{macrocode}
trijut#:=0.75jutstretch*thick#;
%    \end{macrocode}
%
% \DescribeVariable{clubjut}
%    The fractional protusion of the club base.
%    \begin{macrocode}
clubjut:=5/12;
%    \end{macrocode}
%
% \DescribeVariable{o}
%    Amount of overshoot for curves (as in an `o'). Use CMR values.
%    \begin{macrocode} 
%<base7|base7b> o#:=5/36pt#;   
%<base10|base10b> o#:=8/36pt#;   
%<base17|base17b> o#:=10/36pt#;   

%    \end{macrocode}
%
% \DescribeVariable{slant}
% |slant| is the amount the font slopes to the right. 
%    \begin{macrocode}
slant:=0;      % tilt ratio $(\Delta x/\Delta y)$

%    \end{macrocode}
% 
% \DescribeVariable{monospace} 
%    We are generating a variable-width font.
%    \begin{macrocode}
monospace:=false;    % should all characters have the same width?

%    \end{macrocode}
%
% \DescribeVariable{dot_size}
%    The size of (punctuation) dots.
%    \begin{macrocode}
dot_size#:=5thin#;   % size of dots
%    \end{macrocode}
%
% \DescribeVariable{comma_width}
%    The horizontal width of a comma.
%    \begin{macrocode}
comma_width#:=2.5dot_size#; 

%    \end{macrocode}
%
%    Finally, call the driver file for the font.
%    \begin{macrocode} 
generate imintitle      %% switch to the driver file

%    \end{macrocode}
%
%    The end of this code section.
%    \begin{macrocode}
%</base7|base10|base17|base7b|base10b|base17b>
%    \end{macrocode}
%
%
% \subsection{The driver file}
%
%    The driver file sets up the font parameters and also contains
% the macros used in the definition of the characters.
%
%    \begin{macrocode}
%<*mfd>
% This is IMINTITLE.MF for the Insular Minuscule font.
% This makes a short font.
% This file also contains special macros universally needed in the 
% font but either not in the cmbase.mf file or modifications of these.
%
%    \end{macrocode}
%
% \begin{routine}{makebox}
%    This is a new version of the \Lpack{cmbase.mf} |makebox| macro.
% Essentially, as we are only generating a single case font, we don't
% need all the horizontals for the CMR characters.
%
%    \begin{macrocode}
% A new version of cmbase.mf makebox macro
def makebox(text rule) =
  for y=0,half_height,cap_height,body_height,x_height,-desc_depth,-body_depth:
    rule((l,y)t_,(r,y)t_); endfor  % horizontals
  for x=l,r: rule((x,-body_depth)t_,(x,body_height)t_); endfor % verticals
  for x=u*(1+floor(1/u)) step u until r-1:
    rule((x,-body_depth)t_,(x,body_height)t_); endfor         % more verticals
  if charic<>0:
    rule((r+charic*pt,h.o_),(r+charic*pt,.5h.o_)); fi  % italic correction
enddef;

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{proofpcbb}
%    The macro |proofpcbb(S, xoff, yoff)| draws crosses at the corners of the
% square, and at the bottom and top midpoints, where the point |zS| is at
% position |(xoff,yoff)| in the square. 
%    \begin{macrocode}

% A macro to delineate a letter's bounding square in proof mode.
% Point z$ is at (xoff,yoff) in the bounding square.
def proofpcbb(suffix $)(expr xoff, yoff) =
if proofing > 0:
  x$bl = x$ - xoff; y$bl = y$ - yoff;         % Bottom Left Hand Corner
  z$br = (x$bl+side, y$bl);                   % BRHC
  z$tr = (x$bl+side, y$bl+side);              % TRHC
  z$tl = (x$bl, y$bl+side);                   % TLHC
  z$bc = 1/2[z$bl,z$br]; z$tc = 1/2[z$tl,z$tr];  % horizontal mid points
  pair hc, vc;
  hc = (2u,0); vc = (0,2u);
  pickup pensquare scaled 2;
  for s = z$bl, z$br, z$tr, z$tl, z$bc, z$tc:
    draw s-hc--s+hc;
    draw s-vc--s+vc;
  endfor
fi
enddef;

%    \end{macrocode}
% \end{routine}
%
%
%
% \begin{routine}{inslrmin_font_setup}
%    This macro contains the set up for the \thisfont{} fonts.
%    \begin{macrocode}
 
def inslrmin_font_setup= % contains special stuff for inslrmin fonts
  define_pixels(side,half_height,carol_height,comma_width);
  define_pixels(u,dot_size,letter_size,cap_height,width_adj,serif_fit,
                cap_serif_fit,jut,cap_jut,trijut);
  define_pixels(fig_width);
  define_whole_pixels(letter_fit,sb);
  define_whole_vertical_pixels(body_height,asc_height,cap_height,x_height,
                               desc_depth,body_depth,fig_height);
  define_corrected_pixels(o);
  define_blacker_pixels(thick,thin);
  let adjust_fit = normal_adjust_fit;
%    \end{macrocode}
% \DescribeVariable{stylus}
%  The pen for drawing the thinnest lines is |stylus|.
%    \begin{macrocode}
  pickup pencircle scaled thin;
  stylus:=savepen;
%    \end{macrocode}
% \DescribeVariable{thickstylus}
%  The pen for drawing lines a bit thicker than the thinnest is |thickstylus|.
%    \begin{macrocode}
  pickup pencircle scaled (1.5thin);
  thickstylus:=savepen;
%    \end{macrocode}
% \DescribeVariable{quill}
%  The normal calligraphic pen is |quill|.
%    \begin{macrocode}
  pickup pencircle xscaled thick yscaled thin rotated pangle;
  quill:=savepen;
  numeric pcshiftx#; % x value of LHS of box wrt origin of char box
  define_pixels(pcshiftx);
  numeric sqxside#;   % x size of the square
  numeric sqyside#;   % y size of the square
  define_pixels(sqxside,sqyside);

enddef; % end of inslrmin_font_setup

%    \end{macrocode}
% \end{routine}
%
%
% \DescribeVariable{ductus}
% A boolean to control drawing the ductus (TRUE) or the full letter (FALSE).
%    \begin{macrocode}
boolean ductus;
ductus:=false;
%    \end{macrocode}
%
% \DescribeVariable{qhor}
% \DescribeVariable{qvert}
% The cosine and sine of the pen angle.
%    \begin{macrocode}
numeric qhor, qvert;
qhor:=cosd(pangle); qvert:=sind(pangle);
%    \end{macrocode}
%
% \DescribeVariable{pdir}
% The vector corresponding to the pen angle.
%    \begin{macrocode}
pair pdir; pdir=dir(pangle);
%    \end{macrocode}
%
% \DescribeVariable{ppdir}
% The vector that is perpendicular (anticlockwise) to the pen angle.
%    \begin{macrocode}
pair ppdir; ppdir=dir(pangle+90);
%    \end{macrocode}
%
% \begin{routine}{draw_serif}
% A macro to draw a serif. |draw_serif(1,2,f)| uses the current pen to
% draw a serif of extent |jut| at |z1| to the left of the line from |z2| 
% to |z1|. The
% radius is controlled by |f|, where $0<f<1$. The `stem' from |z1| to |z2|
% starts at the point |z1a|.
%    \begin{macrocode}

def draw_serif(suffix $, $$)(expr fr)=
  numeric beta, ajut, bjut;
%    \end{macrocode}
% |fr| and |beta| control the serif radius.
%    \begin{macrocode}
  beta=1-fr;
  ajut=fr*jut; bjut=beta*jut;
%    \end{macrocode}
% The points |$c|, |$b| and |$a| define the serif. For a top (bottom) serif
% the leftmost (rightmost) point is 
% |$c| and |$a| is on the stem. |$a| is moved from |$| towards |$$| by the 
% distance |ajut|, and the other points are calculated from this. If the stem
% is not vertical, then we have to rotate |$b| to match.
%    \begin{macrocode}
  pair vec[]; vec1=unitvector(z$$-z$);
  vec2=ajut*vec1;
  z$a=z$ shifted vec2;
  z$b=z$a rotatedaround (z$,-90);
  boolean top_serif;
  if y$>y$$:
    top_serif := true;
    z$c=z$b shifted (-bjut*pdir);
  else:
    top_serif:=false;
    z$c=z$b shifted (bjut*pdir);
  fi
%    \end{macrocode}
% Draw the parts, and finish off.
%    \begin{macrocode}
  if top_serif:
    draw z$c--z$b{pdir}..{z$$-z$}z$a;    % the serif
  else:
    draw z$c--z$b{-pdir}..{z$$-z$}z$a;
  fi
  labels($a,$b,$c);
enddef; % end of draw_serif

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_roundserif}
% The |draw_serif| routine can leave a bump at the end of the stem.
% The |draw_roundserif| routine, which takes the same arguments,
% is meant to eliminate the bump.
%    \begin{macrocode}

def draw_roundserif(suffix $, $$)(expr fr)=
  draw_serif($, $$, fr);
  undraw z$--z$a;
enddef; % end of draw_roundserif

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{draw_flatserif}
% A macro to draw a serif. |draw_serif(1,2,f)| uses the current pen to
% draw a serif of extent |jut| at |z1| to the left of the line from |z2| 
% to |z1|. The
% radius is controlled by |f|, where $0<f<1$. The `stem' from |z1| to |z2|
% starts at the point |z1a|. This produces a serif like |draw_serif| except
% that one side of the seerif is flat.
%    \begin{macrocode}

def draw_flatserif(suffix $, $$)(expr fr)=
  numeric beta, ajut, bjut;
%    \end{macrocode}
% |fr| and |beta| control the serif radius.
%    \begin{macrocode}
  beta=1-fr;
  ajut=fr*jut; bjut=beta*jut;
%    \end{macrocode}
% The points |$c|, |$b| and |$a| define the serif. For a top (bottom) serif
% the leftmost (rightmost) point is 
% |$c| and |$a| is on the stem. |$a| is moved from |$| towards |$$| by the 
% distance |ajut|, and the other points are calculated from this. If the stem
% is not vertical, then we have to rotate |$b| to match.
%    \begin{macrocode}
  pair vec[]; vec1=unitvector(z$$-z$);
  vec2=ajut*vec1;
  z$a=z$ shifted vec2;
%%%  z$b=z$a rotatedaround (z$,-90);
  boolean top_serif;
  if y$>y$$:
    top_serif := true;
    z$c=z$ shifted (-jut*pdir);
  else:
    top_serif:=false;
    z$c=z$ shifted (jut*pdir);
  fi
  z$b = fr[z$,z$c];
%    \end{macrocode}
% Draw the parts, and finish off.
%    \begin{macrocode}
  draw z$a--z$;
  if top_serif:
    draw z$c--z$b{pdir}..{z$$-z$}z$a;    % the serif
  else:
    draw z$c--z$b{-pdir}..{z$$-z$}z$a;
  fi
  labels($a,$b,$c);
enddef; % end of draw_flatserif

%    \end{macrocode}
% \end{routine}
%
%
%
% \begin{routine}{draw_triserif}
% A macro to draw a triangular top left serif.
% |draw_triserif(1,tj)| draws a serif at |z1| with its leftmost x
% value at |x1-tj|, where it is assumed that the
% top point on the stem is at |z1| and the stem was drawn with |quill|.
%    \begin{macrocode}

def draw_triserif(suffix $)(expr tj)=
  pen oldpen; oldpen:=currentpen;
  pickup quill;
  x$ts1'=lft x$; y$ts1'=bot y$;
  pickup stylus;
  lft x$ts1=x$ts1'; bot y$ts1=y$ts1';
  x$ts2=x$ts1-tj; z$ts2=whatever[z$,z$ts1];
  x$ts3=x$ts1; y$ts3=y$ts2-tj;
  pickup stylus;
%%  filldraw z$ts1--z$ts2--z$ts3--cycle;
  filldraw z$--z$ts2--z$ts3--cycle;
  pickup oldpen;
  labels($ts1,$ts2,$ts3);
enddef; % end of draw_triserif

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_istem}
%  A macro to draw the shape of an i. |draw_istem(1,2,f)| draws a stem whose
% top is at |z1| and bottom at |z2|. It draws with the current pen and the serifs
% are of extent |jut|. There is a top left and bottom right serif.
% The serif radius is controlled by |f|, with $0<f<1$.
%    \begin{macrocode}

def draw_istem(suffix $, $$)(expr fr)=
  draw_serif($, $$, fr);  % top serif
  draw_serif($$, $, fr);  % bottom serif
  draw z$a--z$$a;  % the stem
enddef; % end of draw_istem

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_tstem}
%  A macro to draw the shape of the stem of a `t'. |draw_tstem(1,2,f)| draws a 
% stem whose
% top is at |z1| and bottom at |z2| with a right serif at |z2|. The radius
% is controlled by |f|, with $0 < f < 1$.
% It draws with the current pen and the serif is of extent |jut|.
% NOTE: for the IMIN font, just the stem is drawn --- no serif!
%    \begin{macrocode}

def draw_tstem(suffix $, $$)(expr fr)=
%%  draw_serif($$, $, fr);  % the serif
%%  draw z$--z$$a;                      % the stem
  draw z$--z$$;
enddef; % end of draw_tstem

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_tlserif}
%  A macro to draw a top left serif. |draw_tlserif(1,2,f)| draws a serif on top
% of a stem whose absolute 
% top is at |z1| and bottom at |z2|. It draws with the current pen and the serif
% is of extent |jut|. It also draws the stem to the point |z2|. The serif
% radius is controlled by |f|, with $0<f<1$.
%    \begin{macrocode}

def draw_tlserif(suffix $, $$)(expr fr)=
  draw_serif($, $$, fr);  % the serif
  draw z$a--z$$;                       % the stem
enddef; % end of draw_tlserif

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{draw_flick}
%  A macro to draw a flick (like an eyebrow). 
% |draw_flick(1,rise,fall,fjut)| draws a stroke starting at |z1| rising up by
% |rise| and falling down by |fall| wrt |z1|. The overall stroke distance is
% |fjut| to the right of |z1|. It is drawn with the current pen.
%    \begin{macrocode}

def draw_flick(suffix $)(expr rise, fall, fjut)=
%    \end{macrocode}
% The points |z$a| and |z$b|, together with |z$| make up three points on the
% ductus.
%    \begin{macrocode}
  rt x$b = x1+fjut; top y$b=y$-fall;
  x$a=0.5[x$,x$b]; top y$a=y$+rise;
%    \end{macrocode}
% Draw the part, and finish off.
%    \begin{macrocode}
  draw z$..z$a..z$b; 
  labels($a,$b);
enddef; % end of draw_flick

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{draw_wave}
% A macro to draw a (horizontal) stroke with a flick at each end 
% (down at the left and up at the right). |draw_wave(1,2,f)| uses the current
% pen to draw from |z1wl| to |z1wr|, where |x1wl=x1|, |y1wl=y1-f|, and
% |x1wr=x2|, |y1wr=y2+f|, with |z1| assumed to be at the left of |z2|.
%    \begin{macrocode}

def draw_wave(suffix $,$$)(expr f)=
  x$wl=x$; y$wl=y$-f;
  x$wr=x$$; y$wr=y$$+f;
  z$wc=0.5[z$wl,z$wr];
  draw z$wl{pdir}..z$wc{right}..{pdir}z$wr;
  labels($wl,$wc,$wr);
enddef; % end of draw_wave
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_tail}
% A macro to draw a tail at the bottom of a (vertical) stem.
% |draw_tail(1,fjut)| draws a tail at the bottom of the stem which ends at |z1|.
% The depth is controlled by the |desc_depth| value and the jut by |fjut|.
%    \begin{macrocode}

def draw_tail(suffix $)(expr fj)=
  pen oldpen; oldpen:=currentpen;
  pickup quill;
  x$tl' = lft x$; y$tl=bot y$;
  pickup stylus;
  lft x$tl=x$tl';
  x$tb=x$tl-fj; bot y$tb=y$tl-1/2desc_depth;
  filldraw z${down}..{-pdir}z$tb & z$tb{pdir}..{up}z$tl--cycle;
  pickup oldpen;
  labels($tb,$tl);
enddef; % end of draw_tail
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_triangle}
% A macro to draw a downward pointing equilateral triangle.
% |draw_triangle(1,sz)| draws a triangle of side length |sz| with |z1| in the middle
% of the base.
%    \begin{macrocode}

def draw_triangle(suffix $)(expr sz)=
  pen oldpen; oldpen:=currentpen;
  pickup stylus;
  x$t1=x$-sz/2; x$t3=x$+sz/2;
  y$t1=y$t3=y$;
  x$t2=x$; y$t2=y$-0.9sz;   % approx sqrt(3)/2
  filldraw z$t1--z$t2--z$t3--cycle;
  pickup oldpen;
  labels($t1,$t2,$t3);
enddef; % end of draw_triangle
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_utriangle}
% A macro to draw an upward pointing equilateral triangle.
% |draw_utriangle(1,sz)| draws a triangle of side length |sz| with |z1| in the middle
% of the base.
%    \begin{macrocode}

def draw_utriangle(suffix $)(expr sz)=
  pen oldpen; oldpen:=currentpen;
  pickup stylus;
  x$t1=x$-sz/2; x$t3=x$+sz/2;
  y$t1=y$t3=y$;
  x$t2=x$; y$t2=y$+0.9sz;   % approx sqrt(3)/2
  filldraw z$t1--z$t2--z$t3--cycle;
  pickup oldpen;
  labels($t1,$t2,$t3);
enddef; % end of draw_utriangle
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_rtriangle}
% A macro to draw a downward pointing right angled triangle.
% |draw_rtriangle(1,sz)| draws a triangle of side length |sz| with |z1| at the
% right (where the right angle is).
%    \begin{macrocode}

def draw_rtriangle(suffix $)(expr sz)=
  pen oldpen; oldpen:=currentpen;
  pickup stylus;
  x$t1=x$-sz; rt x$t3=x$;
  y$t1=y$t3=y$;
  x$t2=x$t3; y$t2=y$-sz;
  filldraw z$t1--z$t2--z$t3--cycle;
  pickup oldpen;
  labels($t1,$t2,$t3);
enddef; % end of draw_rtriangle
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_rutriangle}
% A macro to draw an upward pointing right angled triangle.
% |draw_rutriangle(1,sz)| draws a triangle of side length |sz| with |z1| at the
% right (where the right angle is).
%    \begin{macrocode}

def draw_rutriangle(suffix $)(expr sz)=
  pen oldpen; oldpen:=currentpen;
  pickup stylus;
  x$t1=x$-sz; rt x$t3=x$;
  y$t1=y$t3=y$;
  x$t2=x$t3; y$t2=y$+sz;
  filldraw z$t1--z$t2--z$t3--cycle;
  pickup oldpen;
  labels($t1,$t2,$t3);
enddef; % end of draw_rutriangle
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_fork}
% A macro to draw a forked line.
% |draw_fork(1,2,sz)| draws a graduated line from |z1| to |z2| with a forked
% end of size |sz|.
%    \begin{macrocode}

def draw_fork(suffix $, $$)(expr sz)=
  pen oldpen; oldpen:=currentpen;
  pickup quill;
  x$f1'=lft x$; y$f1'=bot y$;
  x$f3'=rt x$;  y$f3'=top y$;
  pickup stylus;
  lft x$f1=x$f1'; bot y$f1=y$f1';
  rt x$f3=x$f3';  y$f3-y$=2*(y$-y$f1);
  rt x$f2=x$$-sz; bot y$f2=y$$;
  rt x$f4= rt x$f5=x$$;
  bot y$f5=y$$-sz; top y$f4=y$$+1/2sz;
  filldraw z$f1--z$f2--z$f3--cycle;   % the line
  draw z$f2{right}..z$f4;             % upper fork
  draw z$f2{right}..z$f5;             % lower fork
  pickup oldpen;
  labels($f1,$f2,$f3,$f4,$f5);
enddef; % end of draw_fork
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_urswish}
% A macro to draw a line up and to the right with an under curl at the end.
% |draw_urswish(1,2)| draws from |z1| towards |z2|, which is the max upper right
% of a bounding box, where the curl is.
%    \begin{macrocode}

def draw_urswish(suffix $, $$)=
  pen oldpen; oldpen:=currentpen;
  pickup quill;
  rt x$$s1=x$$-thick; top y$$s1=y$$;
  rt x$$s2=x$$; 
%%  x$$s3=x$$-thick;
  lft x$$s3=x$$s1;
  bot y$$s3=y$$-thick; y$$s2=0.5[y$$s1,y$$s3];
%%  draw z$---z$$s1{right}..z$$s2{down}..{-pdir}z$$s3;
  draw z$..z$$s1{pdir}..z$$s2{down};
  labels($$s1,$$s2,$$s3); 
enddef; % end of draw_urswish
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{bowl_stem}
%  Calculate where a bowl should meet a stem so that the pen is moving in the
% pen direction.
% |bowl_stem(1,2)| calculates the point |z1i|, where |z1| is on the bowl and
% there is a vertical line at |x2|.
%
%    \begin{macrocode}

def bowl_stem(suffix $, $$)=
  x$'=0.5[x$,x$$]; y$'=y$;    % the mid-point
  z$''=z$' shifted (thick*pdir);
  x$i=x$$; z$i=whatever[z$',z$''];
  labels($',$i);
enddef; % end of bowl_stem
%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_clubbase}
% Draw a clubbed bottom of a vertical stem for the IMIN font.
% |draw_clubbase(1, 2, st, left, right)| draws from |st[z2,z1]| to |z2|. 
% At |z2| the pen
% is shifted |left| fraction of the pen width and |right| fraction of the
% pen width, both in the direction of the pen angle. Pen draws smoothly the
% path |z1|, |left|, |right|, |z1|.
%    \begin{macrocode}

% draw clubbed bottom of vertical stem for IMIN font.
def draw_clubbase(suffix $, $$)(expr st, lft, rt)=
  z$$l = z$$ shifted (lft*thick*(-pdir));
  z$$r = z$$ shifted (rt*thick*(pdir));
  z$$t = st[z$$,z$];
  draw z$$t{z$$-z$}..z$$l--z$$r..{z$-z$$}z$$t;
  labels($$t,$$l,$$r);
enddef; % end of draw_clubbase

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_pdot}
%  A macro to draw a period dot.
% |draw_pdot(1,sz)| uses |stylus| to draw a dot centered at |z1| of overall size |sz|.
%    \begin{macrocode}

def draw_pdot(suffix $)(expr sz)=
%    \end{macrocode}
% Draw a square rotated 45 degrees.
%    \begin{macrocode}
  z$s = z$ shifted (0.5sz*left);
  z$t = z$ shifted (0.5sz*up);
  z$u = z$s shifted (sz*right);
  z$v = z$t shifted (sz*down);
  pickup stylus;
  filldraw z$s--z$t--z$u--z$v--cycle;
  labels($s,$t,$u,$v);
enddef; % end of draw_pdot

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_pcomma}
%  A macro to draw a period comma.
% |draw_pcomma(1,t,w)| draws a comma placed at |z1| (the top), line width is |t|
% and bottom of line is |w| horizontally from |z1|. The pen is |stylus|.
%    \begin{macrocode}

def draw_pcomma(suffix $)(expr sz, ar)=
%    \end{macrocode}
% Draw a line of at |z$| of width |sz| sloping back and down at 45 degrees
% for a total width of |ar|.
%    \begin{macrocode}
  z$s = z$ shifted (0.5sz*left);
  z$t = z$s shifted (sz*right);
  x$v=x$s-ar; y$v=y$s-ar;
  z$u = z$v shifted (sz*right);
  pickup stylus;
  filldraw z$s--z$t--z$u--z$v--cycle;
%%  filldraw z$s--z$t--z$u--cycle;
  labels($s,$t,$u,$v);
enddef; % end of draw_pcomma

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{draw_plq}
%  A macro to draw a period left quote.
% |draw_pcomma(1,t,w)| draws a left quote placed at |z1| (the top), line width is |t|
% and bottom of line is |w| horizontally from |z1|.
%    \begin{macrocode}

def draw_plq(suffix $)(expr sz, ar)=
%    \end{macrocode}
% Draw a line of at |z$| of width |sz| sloping forward and down at 45 degrees
% for a total width of |ar|.
%    \begin{macrocode}
  z$s = z$ shifted (0.5sz*left);
  z$t = z$s shifted (sz*right);
  x$v=x$s+ar; y$v=y$s-ar;
  z$u = z$v shifted (sz*right);
  pickup stylus;
  filldraw z$s--z$t--z$u--z$v--cycle;
%%  filldraw z$s--z$t--z$v--cycle;
  labels($s,$t,$u,$v);
enddef; % end of draw_plq

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{offsetbowl}
%    A macro to calculate the outer and inner paths (|obouter| and |obinner|)
% for a non-centered letter `o'. |offsetbowl($, sx, sy, fx, fy)| 
% calculates the paths for an `o'
% enclosed in a rectangle size |sx| by |sy| with its bottom lefthand corner
% located at |z$|, where the center of the o is at |(fx*sx, fy*sy)| in the
% bounding rectangle.
%
%    Two construction paths, namely |obfirst| and |obsecond| are also
% available. They should be identical.
%
%    All paths have points listed in a clockwise direction, starting with
% |z$nh| or |z$minl| as appropriate.
%
%  |offsetbowl($, sx, sy, 1/2, 1/2)| gives the same results as |obowl($, sx, sy)|.
%    \begin{macrocode}

path obouter, obinner, obfirst, obsecond;
def offsetbowl(suffix $)(expr sx, sy, fx, fy)=
  numeric inx, iny, cx, cy;
  pair pt[];
  path pth[];
  inx := 1/2thick*cosd(pangle); iny := 1/2thick*sind(pangle);
  cx := x$+fx*sx; cy := y$+fy*sy;
  z$obc = (cx,cy);
%    \end{macrocode}
% Calulate points on the centre path of the pen. These are offset by |inx|
% from the rectangles vertical sides and by |iny| from the horizontal sides.
% If the pen is parallel to a side, offset the point by half the pen's 
% dimension. First do the West, East, North and South points.
%    \begin{macrocode}
  if pangle = 90:
    z$wt=(x$+1/2thin, cy);
    z$et=(x$+sx-1/2thin, cy);
  else:
    z$wt=(x$+inx, cy);
    z$et=(x$+sx-inx, cy);
    penpos$wt(thick,pangle);
    penpos$et(thick,pangle);
  fi
  if pangle = 0:
    z$nh=(cx, y$+sy-1/2thin);
    z$sh=(cx, y$+1/2thin);
  else:
    z$nh=(cx, y$+sy-iny);
    z$sh=(cx, y$+iny);
    penpos$nh(thick,pangle);
    penpos$sh(thick,pangle);
  fi
  obfirst := z$nh{right}..z$et{down}..z$sh{left}..z$wt{up}..cycle;
%    \end{macrocode}
% Now calculate the points on the path |obfirst| where the pen will
% draw the min width lines (i.e., the points where the pen will be
% moving parallel to |pangle|).
%    \begin{macrocode}
  if pangle = 90:
      z$minl = z$wt; z$maxr = z$nh; z$minr = z$et; z$maxl = z$sh;
  else:
    if pangle = 0:
      z$minl = z$nh; z$maxr = z$et; z$minr = z$sh; z$maxl = z$wt;
    else:
      z$minl = directionpoint dir(pangle)     of obfirst;
      z$minr = directionpoint -dir(pangle)    of obfirst;
%    \end{macrocode}
% The max points are roughly where the inner and outer diverge 
% the most. These are simple for 0 and 90 degree pens and have
% been calculated above. It's not so simple for intermediate
% angles. For a reasonable looking result, we pick the max
% points to be halfway between the min points. This involves
% calculating some angles, paths and intersections.
%    \begin{macrocode}
      pt1 := z$minr - z$minl;           % direction
      pt2 := (- ypart pt1, xpart pt1);  % perpendicular
      pt3 := 1/2[z$minl, z$minr];
      pt4 := pt3 shifted pt2;
      pt5 := pt3 shifted -pt2;
      pth1 := pt3--pt4;
      pth2 := pt3--pt5;
      z$maxr = pth1 intersectionpoint obfirst;
      z$maxl = pth2 intersectionpoint obfirst;
    \fi
  \fi
%    \end{macrocode}
% Place the pen at each of these points to get the outer and inner points.
%    \begin{macrocode}
  penpos$minl(thin,pangle+90);
  penpos$maxr(thick,pangle);
  penpos$minr(thin,pangle+90);
  penpos$maxl(thick,pangle);
%    \end{macrocode}
% Finally, the outer and inner paths.
%    \begin{macrocode}
  obsecond := z$minl..z$maxr..z$minr..z$maxl..cycle;
  z$minlo = z$minl.r; z$maxro = z$maxr.r;
  z$minro = z$minr.l; z$maxlo = z$maxl.l;
  obouter := z$minlo{dir(pangle)}...z$maxro...z$minro{-dir(pangle)}...z$maxlo...cycle;
  z$minli = z$minl.l; z$maxri = z$maxr.l;
  z$minri = z$minr.r; z$maxli = z$maxl.r;
  obinner := z$minli...z$maxri...z$minri...z$maxli...cycle;
  labels($obc, $nh, $et, $sh, $wt);
  labels($minl, $maxr, $minr, $maxl);
  labels($minlo, $maxro, $minro, $maxlo);
  labels($minli, $maxri, $minri, $maxli);
enddef;

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{obowl}
%    A macro to calculate the outer and inner paths (|obouter| and |obinner|)
% for the letter `o'. |obowl($, sx, sy)| calculates the paths for an `o'
% centered and enclosed in a rectangle size |sx| by |sy| with its bottom 
% lefthand corner located at |z$|.
%    \begin{macrocode}

def obowl(suffix $)(expr sx, sy)=
  offsetbowl($, sx, sy, 1/2, 1/2);
enddef;

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{scalarprod}
%  |v scalarprod w| calulates the scalar product between the
% two vectors |v| and |w|.
%    \begin{macrocode}

primarydef v scalarprod w =
  (xpart v * ypart w - ypart v * xpart w)
enddef;

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{tangentpoint}
% |tangentpoint($, path)| calculates the point |z$tan| on the |path|
% so that |z$tan--z$| is tangent to the path. It uses a binary search
% to find a point on the path such that the path direction is
% (anti-) parallel to the dirction from that point to the given point.
%    \begin{macrocode}

def tangentpoint(suffix $)(expr pth)=
  pair vecll, veclr, veclm;    % "tangent" line directions
  numeric pl, pr, pm;          % path parameter values
  pair vecpl, vecpr, vecpm;    % path directions
  pair ptl, ptr, ptm;          % path points
  numeric sl, sr, sm;          % scalar products of path/line directions
  numeric stpsize;             % size of current binary step
  numeric tantol;              % tolerance
  boolean wtest;               % a boolean

  tantol := eps;
%    \end{macrocode}
% Initialise using the left right and middle points on the path.
%    \begin{macrocode}
  pl:=0; pr:=length pth; pm:=0.5(pl+pr); stpsize:=pr-pl;
  ptl := point pl of pth;
  ptm := point pm of pth;
  ptr := point pr of pth;
%    \end{macrocode}
% Now the various vectors, and make sure they are unit vectors to
% have a consistent measure scale when we take the scalar products.
%    \begin{macrocode}
  vecll := unitvector (z$-ptl);
  veclm := unitvector (z$-ptm);
  veclr := unitvector (z$-ptr);
  vecpl := unitvector (direction pl of pth);
  vecpm := unitvector (direction pm of pth);
  vecpr := unitvector (direction pr of pth);
  sl := vecll scalarprod vecpl;
  sm := veclm scalarprod vecpm;
  sr := veclr scalarprod vecpr;
%    \end{macrocode}
% We stop if any of the points is the tangent point, or if the step
% size is too small, or if the signs of the left and right scalar
% products are the same.
%    \begin{macrocode}
  wtest := (stpsize < tantol) or (sl*sr > 0) or
           (abs sl < tantol) or (abs sm < tantol) or (abs sr < tantol);
  if wtest:
    if (stpsize < tantol):
      z$tan=(0,0);
      errmessage("No tangent; path too short");
    else:
      if (sl*sr > 0):
        z$tan=(0,0);
        errmessage("No tangent; end products have the same sign");
      else:
        if (abs sl < tantol):
          z$tan=ptl;
        else:
          if (abs sm < tantol):
            z$tan=ptm;
          else:
            z$tan=ptr;
          fi
        fi
      fi
    fi
  else:
%    \end{macrocode}
% There should be a tangent and we iterate to find it, using
% bisection. If there is one to be found it will be at the
% current middle point. The tangent point will be somewhere
% between the two points that lead to opposite signed scalar 
% products. 
%    \begin{macrocode}
    forever:
      if (sl*sm < 0):  % opposite signs, look between pl & pm
        pr:=pm; pm:=0.5(pr+pl);
        vecpr := vecpm; veclr := veclm; sr:=sm;
      else:
        pl:=pm; pm:=0.5(pr+pl);
        vecpl:=vecpm; vecll:=veclm; sl:=sm;
      fi
      stpsize:=pr-pl;
      ptm := point pm of pth;
      veclm := unitvector (z$-ptm);
      vecpm := unitvector (direction pm of pth);
      sm := veclm scalarprod vecpm;
%    \end{macrocode}
%  We stop the iteration if the step size is too small or the
% middle point is the tangent point. In either case, the
% middle point is the best guess that can be made.
%    \begin{macrocode}
      wtest := (stpsize < tantol) or (abs sm < tantol);
      if wtest:
        if (abs sm < tantol):
          z$tan = ptm;
        else:
          z$tan = ptm;
%%%%%%          errmessage("Warning: tangent approximated");
        fi
      fi
      exitif wtest;
    endfor
  fi
enddef;

%    \end{macrocode}
% \end{routine}
%
%
%    Set the mode and font setup.
%    \begin{macrocode}
 
font_coding_scheme:="ASCII minuscules and punctuation";
mode_setup; 
inslrmin_font_setup;

%    \end{macrocode}
%
%
%    We generate letters, together with some punctuation and
% analphabetics.
%    \begin{macrocode}
 
input iminl;        % lower case
input iminu;        % capitals
input iminpunct;    % punctuation
input iminlig;      % the several dashes
input imindig;      % arabic digits

%    \end{macrocode}
%
% Set up the spacings, stretches and shrinks.
%
%    \begin{macrocode}
 
font_slant slant; font_x_height x_height#;
if monospace: 
  font_normal_space vstretch*9u#; % no stretching or shrinking
  font_quad vstretch*18u#;
  font_extra_space vstretch*9u#;
else: 
  font_normal_space vstretch*6u#+2letter_fit#;
  font_normal_stretch vstretch*3u#; font_normal_shrink vstretch*2u#;
  font_quad vstretch*18u#+4letter_fit#;
  font_extra_space vstretch*2u#;

%    \end{macrocode}
%
% Finally, do the ligtables, but I don't think they are needed (yet?).
%
%    \begin{macrocode}
fi

bye.

%    \end{macrocode}
%
%    \begin{macrocode}
  k#:=-.5u#; kk#:=-1.5u#; kkk#:=-2u#; % three degrees of kerning
  kks#:=-4u#;  kkx#:=-1.5u#; kkj#:=-2u#; kkr#:=-5u#; kkrs#:=-2u#; kkrl#:=-8u#;
  ligtable "s":
                "a" kern kks#, "A" kern kks#,
                "c" kern kks#, "C" kern kks#,
                "d" kern kks#, "D" kern kks#,
                "e" kern kks#, "E" kern kks#,
                "f" kern kks#, "F" kern kks#,
                "g" kern kks#, "G" kern kks#,
                "i" kern kks#, "I" kern kks#,
                "j" kern kks#, "J" kern kks#,
                "k" kern kks#, "K" kern kks#,
                "m" kern kks#, "M" kern kks#,
                "n" kern kks#, "N" kern kks#,
                "o" kern kks#, "O" kern kks#,
                "p" kern kks#, "P" kern kks#,
                "q" kern kks#, "Q" kern kks#,
                "r" kern kks#, "R" kern kks#,
                "t" kern kks#, "T" kern kks#,
                "u" kern kks#, "U" kern kks#,
                "v" kern kks#, "V" kern kks#,
                "w" kern kks#, "W" kern kks#,
                "x" kern kks#, "X" kern kks#,
                "y" kern kks#, "Y" kern kks#,
                "z" kern kks#, "Z" kern kks#;

  ligtable "S":
                "a" kern kks#, "A" kern kks#,
                "c" kern kks#, "C" kern kks#,
                "d" kern kks#, "D" kern kks#,
                "e" kern kks#, "E" kern kks#,
                "f" kern kks#, "F" kern kks#,
                "g" kern kks#, "G" kern kks#,
                "i" kern kks#, "I" kern kks#,
                "j" kern kks#, "J" kern kks#,
                "k" kern kks#, "K" kern kks#,
                "m" kern kks#, "M" kern kks#,
                "n" kern kks#, "N" kern kks#,
                "o" kern kks#, "O" kern kks#,
                "p" kern kks#, "P" kern kks#,
                "q" kern kks#, "Q" kern kks#,
                "r" kern kks#, "R" kern kks#,
                "t" kern kks#, "T" kern kks#,
                "u" kern kks#, "U" kern kks#,
                "v" kern kks#, "V" kern kks#,
                "w" kern kks#, "W" kern kks#,
                "x" kern kks#, "X" kern kks#,
                "y" kern kks#, "Y" kern kks#,
                "z" kern kks#, "Z" kern kks#;

  ligtable "x": 
                "a" kern kkx#, "A" kern kkx#,
                "b" kern kkx#, "B" kern kkx#,
                "c" kern kkx#, "C" kern kkx#,
                "d" kern kkx#, "D" kern kkx#,
                "e" kern kkx#, "E" kern kkx#,
                "g" kern kkx#, "G" kern kkx#,
                "j" kern kkx#, "J" kern kkx#,
                "l" kern kkx#, "L" kern kkx#,
                "o" kern kkx#, "O" kern kkx#,
                "q" kern kkx#, "Q" kern kkx#,
                "t" kern kkx#, "T" kern kkx#,
                "u" kern kkx#, "U" kern kkx#,
                "v" kern kkx#, "V" kern kkx#,
                "w" kern kkx#, "W" kern kkx#,
                "y" kern kkx#, "Y" kern kkx#;

  ligtable "X": 
                "a" kern kkx#, "A" kern kkx#,
                "b" kern kkx#, "B" kern kkx#,
                "c" kern kkx#, "C" kern kkx#,
                "d" kern kkx#, "D" kern kkx#,
                "e" kern kkx#, "E" kern kkx#,
                "g" kern kkx#, "G" kern kkx#,
                "j" kern kkx#, "J" kern kkx#,
                "l" kern kkx#, "L" kern kkx#,
                "o" kern kkx#, "O" kern kkx#,
                "q" kern kkx#, "Q" kern kkx#,
                "t" kern kkx#, "T" kern kkx#,
                "u" kern kkx#, "U" kern kkx#,
                "v" kern kkx#, "V" kern kkx#,
                "w" kern kkx#, "W" kern kkx#,
                "y" kern kkx#, "Y" kern kkx#;

  ligtable "a": "A":
           "b": "B":
           "c": "C":
           "d": "D":
           "e": "E":
           "h": "H":
           "i": "I":
           "k": "K":
           "l": "L":
           "m": "M":
           "n": "N":
           "o": "O":
           "p": "P":
           "t": "T":
           "u": "U":
           "v": "V":
           "w": "W":
           "z": "Z":
           "j" kern kkj#, "J" kern kkj#;

  ligtable "r":
                "a" kern kkr#, "A" kern kkr#,
                "b" kern kkr#, "B" kern kkr#,
                "c" kern kkr#, "C" kern kkr#,
                "d" kern kkr#, "D" kern kkr#,
                "e" kern kkr#, "E" kern kkr#,
                "f" kern kkrs#, "F" kern kkrs#,
                "g" kern kkrs#, "G" kern kkrs#,
                "h" kern kkr#, "H" kern kkr#,
                "i" kern kkr#, "I" kern kkr#,
                "j" kern kkj#, "J" kern kkj#,
                "k" kern kkrs#, "K" kern kkrs#,
                "l" kern kkr#, "L" kern kkr#,
                "m" kern kkr#, "M" kern kkr#,
                "n" kern kkrs#, "N" kern kkrs#,
                "o" kern kkr#, "O" kern kkr#,
                "p" kern kkrs#, "P" kern kkrs#,
                "q" kern kkr#, "Q" kern kkr#,
                "r" kern kkrs#, "R" kern kkrs#,
                "s" kern kkr#, "S" kern kkr#,
                "t" kern kkr#, "T" kern kkr#,
                "u" kern kkr#, "U" kern kkr#,
                "v" kern kkr#, "V" kern kkr#,
                "w" kern kkr#, "W" kern kkr#,
                "x" kern kkx#, "X" kern kkx#,
                "y" kern kkr#, "Y" kern kkr#,
                "z" kern kkr#, "Z" kern kkr#;

  ligtable "R":
                "a" kern kkr#, "A" kern kkr#,
                "b" kern kkr#, "B" kern kkr#,
                "c" kern kkr#, "C" kern kkr#,
                "d" kern kkr#, "D" kern kkr#,
                "e" kern kkr#, "E" kern kkr#,
                "f" kern kkrs#, "F" kern kkrs#,
                "g" kern kkrs#, "G" kern kkrs#,
                "h" kern kkr#, "H" kern kkr#,
                "i" kern kkr#, "I" kern kkr#,
                "j" kern kkj#, "J" kern kkj#,
                "k" kern kkrs#, "K" kern kkrs#,
                "l" kern kkr#, "L" kern kkr#,
                "m" kern kkr#, "M" kern kkr#,
                "n" kern kkrs#, "N" kern kkrs#,
                "o" kern kkr#, "O" kern kkr#,
                "p" kern kkrs#, "P" kern kkrs#,
                "q" kern kkr#, "Q" kern kkr#,
                "r" kern kkrs#, "R" kern kkrs#,
                "s" kern kkr#, "S" kern kkr#,
                "t" kern kkr#, "T" kern kkr#,
                "u" kern kkr#, "U" kern kkr#,
                "v" kern kkr#, "V" kern kkr#,
                "w" kern kkr#, "W" kern kkr#,
                "x" kern kkx#, "X" kern kkx#,
                "y" kern kkr#, "Y" kern kkr#,
                "z" kern kkr#, "Z" kern kkr#;


fi

bye.

%</mfd>
%    \end{macrocode}
%
% \subsection{The code for normal letters}
%
%    The following code is for the lower case characters.
%
%    \begin{macrocode}
%<*min>
% IMINL.MF Program file for Insular Minuscule lower case
%

%    \end{macrocode}
%
%
% \begin{routine}{a}
% The letter `a'.
%    \begin{macrocode}
cmchar "IMIN letter a";
beginchar("a", 2sb#+hstretch*(3/4x_height#+jut#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
path pth[];
pair pr[];
pickup quill;
n1 := w - 2pcshiftx -jut; % effective letter width
% "stem"
x1 = pcshiftx + 2/3n1; top y1=h;
rt x2 = pcshiftx + n1; bot y2=0;
z16 = 1/6[z2,z1];
rt x6 = x16; y6=y16;
lft x4 = pcshiftx; y4 = 1/2h;
% stem path
pth1 := z1{down}..z2;
pr1 := direction 1 of pth1;
z20 = z2 shifted -10pr1;
%%ductus:=true;
if ductus:
  pickup stylus;
else:
  % draw stem
  draw pth1;
  draw_roundserif(2,20,srad);
  % draw bowl
  draw z1{-pdir}..z4{down}..z6{pdir};
fi
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,100);
endchar; % end "a"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{b}
% The letter `b'. 
%    \begin{macrocode}
cmchar "IMIN letter b";
beginchar("b", 2sb#+hstretch*(3/4x_height#), 
               asc_height#, 0);
adjust_fit(0,0);
numeric n[];
path pth[];
pcshiftx := sb;
pickup quill;
n1:=w-2pcshiftx;    % actual letter width
n2:=h/ascratio;    % top of bowl
%%ductus:=true;
lft x1 = pcshiftx+jut; top y1=h;
lft x3 = pcshiftx; y3=1/2n2;
rt x5 = w-pcshiftx; y5=y3;
x4 = 1/2[x3,x5]; bot y4=0;
x6=x4; top y6=n2;
pth1 := z1..z3{down}..z4{right}.. z5{up};
z98=(0,3/4n2); z99=(w,y98);
pth2 := z98--z99;
z7 = pth1 intersectionpoint pth2;
if ductus:
  pickup stylus;
fi
draw z1..z3{down}..z4{right}..z5{up}..z6{left}..z7{-pdir};
draw_flatserif(1,7,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "b"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{c}
% The letter `c'.
%    \begin{macrocode}
cmchar "IMIN letter c";
beginchar("c", 2sb#+hstretch*(5/8x_height#), 
               x_height#, 0);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
n1:=w-2pcshiftx;     % actual letter width
n2:=6/5w-2pcshiftx;  % width of full bowl
x1=pcshiftx + 1/2n1; top y1 = h;
lft x2 = pcshiftx; y2 = 1/2h;
x3 = x1; bot y3 = 0;
rt x4 = w-pcshiftx; y4 = 1/4h;
x24 = x4; y24 = 3/4h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z24..z1{left}..z2{down}..z3{right}..z4{pdir};
ductus:=false;
penlabels(1,2,3,4,5,6,14,16,17,18,100);
endchar; % end "c"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{d}
% The letter `d'. There is a choice between a curved and straight stem.
% I have done the straight one.
%    \begin{macrocode}
cmchar "IMIN letter d";
beginchar("d", 2sb#+hstretch*(3/4x_height#), 
               asc_height#, 0);
adjust_fit(0,0);
numeric n[];
path pth[];
pcshiftx := sb;
pickup quill;
lft x1=pcshiftx; top y1=h;
rt x3 = w-pcshiftx; y3 = 1/2h/ascratio;
x4 = 1/2[x1,x3]; bot y4 = 0;
z5=(x1,y3);
z98=(0,h/ascratio); z99=(w,y98); pth2 := z98--z99;
pth1 := z1{-ppdir}..z3{down}..z4{left};
z6 = pth1 intersectionpoint pth2;
if ductus:
  pickup stylus;
fi
draw z1{-ppdir}..z3{down}..z4{left}..z5{up}..z6{pdir};
ductus:=false;
penlabels(0,1,2,3,4,5,6,7,8,100);
endchar; % end "d"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{e}
% The letter `e'.
%    \begin{macrocode}
cmchar "IMIN letter e";
beginchar("e", sb#+hstretch*(5/4x_height#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
path pth[];
pickup quill;
n1 := w-pcshiftx;    % actual letter width
n2 := 4/8n1;   % width of bowl
x1 = pcshiftx + 5/8n2; top y1=h;
lft x2 = pcshiftx; y2 = 1/2h;
x3 = pcshiftx + 1/2n2; bot y3 = 0;
rt x4 = pcshiftx + n2; y4 = 1/4h;
z98=(0,3/8h); z99=(w,y98);
pth1 := z98--z99;
pth2 := z1{left}..z2{down}..z3{right};
z7 = pth1 intersectionpoint pth2;
rt x9 = w-pcshiftx; y9 = 3/4h;
z8=1/2[z7,z9];
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z7{pdir}..z1{left}..z2{down}..z3{right}..z4{pdir};
draw z7{pdir}..z8{right}..z9{pdir};
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "e"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{f}
% The letter `f'. 
%    \begin{macrocode}
cmchar "IMIN letter f";
beginchar("f", 2sb#+hstretch*(3/4x_height#+jut#), 
               (x_height#), desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; y2=-1/2d;
lft x20=0; bot y20=-d;
%% bottom bar
z4=(rt x1,-thin); rt x6=w-pcshiftx; y6=y4+2thin; z5=1/2[z4,z6];
%% top bar
x7= x1; bot y7 = 1/2h;
rt x9= w-pcshiftx; y9 = 1/2[y7,y1];
x8 = 2/3[x7,x9]; top y8 = h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);            % stem
draw z2{down}..z20{-pdir};
draw_flatserif(1,2,srad);  
draw z4{dir(45)}..z5{right}..z6{dir(45)};   % bottom bar
%%draw_flick(7, 2thin, thin, (w-pcshiftx-x7+1/2thick)); % top bar
draw z7..z8..z9;     % top bar
ductus:=false;
penlabels(1,2,3,4,5,6,7,100);
endchar; % end "f"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{g}
% The letter `g'. 
%    \begin{macrocode}
cmchar "IMIN letter g";
beginchar("g", 2sb#+hstretch*(x_height#), 
               x_height#, desc_depth#);
adjust_fit(0,0);
path pth[];
pair vec[];
pcshiftx := sb;
pickup quill;
%% top bar
lft x1=pcshiftx; top y1=h; rt x2=w-pcshiftx; top y2=h;
x3=1/2[x1,x2]; bot y3=1/8h;
rt x5 = w-pcshiftx; y5 = -1/2d;
x6 = x3; bot y6 = -d;
x7 = 1/2[x1,x3]; y7 = y5;
x8=x3; y8 = -y3;
%%ductus:=true;
if ductus:
  pickup stylus;
  draw z1--z2;               % top bar
  draw pth1; draw pth2;      % curves
  draw rt z8--z9;            % diagonal
else:
  draw z1--z2;
  draw z2--z3;
  draw z3{pdir}..z5{down}..z6{left}..z7{up}..z8{pdir};
  draw_roundserif(1,2,srad);
fi
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "g"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{h}
% The letter `h'.
%    \begin{macrocode}
cmchar "IMIN letter h";
beginchar("h", 2sb#+hstretch*(7/8x_height#+jut#), 
               asc_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
numeric n[];
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=0;
%% bowl
z3=1/2[z2,z1];
rt x5 = w-pcshiftx; y5=y3;
x4=1/2[x3,x5]; top y4 = h/ascratio;
lft x6=x4; bot y6=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                       % stem
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
draw z3{pdir}..z4..z5..z6{-pdir};

ductus:=false;
penlabels(1,2,3,4,5,6,100);
endchar; % end "h"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{i}
% The letter `i'.
%    \begin{macrocode}
cmchar "IMIN letter i";
beginchar("i", 2sb#+hstretch*(thick#+2jut#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=0;
%%ductus:=true;
draw_tstem(1,2,srad);
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
ductus:=false;
penlabels(1,2,100);
endchar; % end "i"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{j}
% The letter `j'. This letter was not in the script, it being a later invention.
%    \begin{macrocode}
cmchar "IMIN letter j";
beginchar("j", sb#+hstretch*(3/8x_height#), 
               x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% stem
rt x1 = w-pcshiftx; top y1 = h;
x2=x1; y2=-1/2d;
%% bottom hook
lft x3 = 0; bot y3 = -d;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z2;               % stem
draw_flatserif(1,2,srad);
draw z2{down}..z3{-pdir};               % hook
ductus:=false;
penlabels(1,2,3,100);
endchar; % end "j"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{k}
% The letter `k'.
%    \begin{macrocode}
cmchar "IMIN letter k";
beginchar("k", 2sb#+hstretch*(x_height#+jut#), 
               asc_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; y2=-1/2d;
lft x20=pcshiftx; bot y20=-d;
%% top arm
z3=(x1,1/2h/ascratio);
rt x5=w-pcshiftx; y5=1/2[y3,y4];
x4=1/2[x3,x5]; top y4=h/ascratio;
%% lower arm
x7=x5; bot y7=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);            % stem
draw z2{down}..z20{-pdir};
draw_flatserif(1,2,srad);
draw z3..z4{right}..z5;          % upper arm
draw z3..{right}z7;              % lower arm
ductus:=false;
penlabels(1,2,3,4,5,100);
endchar; % end "k"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{l}
% The letter `l'. 
%    \begin{macrocode}
cmchar "IMIN letter l";
beginchar("l", 2sb#+hstretch*(3/4x_height#), 
               asc_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
lft x2=pcshiftx; y2=1/5h;
x1=x2+jut; top y1=h;
rt x4=w-pcshiftx; y4=1/5h;
x3=1/2[x2,x4]; bot y3=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1{down}..z2..z3{right}..z4;
draw_flatserif(1,2,srad);
ductus:=false;
penlabels(1,2,3,4,100);
endchar; % end "l"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{m}
% The letter `m'. 
%    \begin{macrocode}
cmchar "IMIN letter m";
beginchar("m", 2sb#+hstretch*(x_height#+2jut#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
path pth[];
pickup quill;
%% left stem
lft x1=pcshiftx+jut; top y1=h;
x2=x1; bot y2=0;
%% start of bowl
x13=x1; y13=3/4h;
%% bottom of right and middle stems
rt x6 = w -pcshiftx - jut; y6=y2;
z4 = 1/2[z2,z6];
%% top of middle and right stems
x3=x4; y3=y1;
x5=x6; y5=y13;
%% top of bowls
x14=2/3[x13,x3]; top y14 = h;
x33=x4; y33=y13;
x34=2/3[x33,x5]; y34 = y14;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                             % left half
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
draw z13{pdir}..z14{right}..z33{down}--z4;
draw_roundserif(4,3,srad);
draw z33{pdir}..z34{right}..z5{down}--z6;
draw_roundserif(6,5,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,13,14,33,34,100);
endchar; % end "m"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{n}
% The letter `n'. This could be like a capital `N' or a lower-case `n'.
% I have chosen to do the second form.
%    \begin{macrocode}
cmchar "IMIN letter n";
beginchar("n", 2sb#+hstretch*(5/8x_height#+2jut#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% left stem
lft x1=pcshiftx+jut; top y1=h;
x2=x1; bot y2=0;
% start of bowl
x13=x1; y13=3/4h;
%% right stem
rt x4 = w-pcshiftx-jut; y4=y2;
x3 = x4; y3 = y13;
% top of bowl
x14 = 2/3[x13,x3]; top y14 = h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                % left stem
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
draw z13{pdir}..z14{right}..z3{down}--z4;
draw_roundserif(4,3,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,13,14,100);
endchar; % end "n"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{o}
% The letter `o'.
%    \begin{macrocode}
cmchar "IMIN letter o";
beginchar("o", 2sb#+hstretch*(3/4x_height#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
lft x1=pcshiftx; rt x3=w-pcshiftx; y1=y3=h/2;
x2=x4=w/2; top y2=h+o; bot y4=-o;
draw z1..z2..z3..z4..cycle;
z5=(pcshiftx,-o);
obowl(5, w-2pcshiftx, h+2o);
%%ductus:=true;
if ductus:
  pickup stylus;
  draw obfirst; draw obsecond; draw obouter; draw obinner;
else:
%%  fill obouter; unfill obinner;
fi
ductus:=false;
penlabels(1,2,3,4,5,100);
endchar; % end "o"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{p}
% The letter `p'.
%    \begin{macrocode}
cmchar "IMIN letter p";
beginchar("p", 2sb#+hstretch*(3/4x_height#+jut#), 
               x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=-1/2d;
lft x20 = pcshiftx; bot y20 = -d;
%% bowl                        % from "h"
z3=3/4[(x1,0),z1];
rt x5 = w-pcshiftx; y5=y3;
x4=1/2[x3,x5]; top y4 = h;
lft x6=x4; bot y6=0;

%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                         % stem
draw_flatserif(1,2,srad);
draw z2{down}..z20{-pdir};
draw z3{pdir}..z4..z5..z6{-pdir};             % bowl (from h)
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,100);
endchar; % end "p"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{q}
% The letter `q'. 
%    \begin{macrocode}
cmchar "IMIN letter q";
beginchar("q", 2sb#+hstretch*(3/4x_height#), 
               x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% right stem
rt x1=w-pcshiftx; top y1=h;
x2=x1; bot y2=-1/2d;
x20 = x1-jut; bot y20=-d;
%% bowl
z3=1/4[(x1,0),z1];
lft x5=pcshiftx; y5=y3;
x4=1/2[x3,x5]; bot y4=0;
x6=x1-jut; top y6=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);  
draw z2{down}..z20{-pdir};                            % stem
draw_flatserif(1,2,srad);
draw z3{-pdir}..z4{left}..z5{up}..z6{pdir};
ductus:=false;
penlabels(0,1,2,3,4,5,6,7,8,100);
endchar; % end "q"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{r}
% The letter `r'.
%    \begin{macrocode}
cmchar "IMIN letter r";
beginchar("r", sb#+hstretch*(7/8x_height#+jut#), 
               x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=-1/2d;
lft x20 = pcshiftx; bot y20 = -d;
%% bowl         
z3=3/4[(x1,0),z1];
rt x5 = w-pcshiftx; y5=y3;
x4=1/2[x3,x5]; top y4 = h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                         % stem
draw_flatserif(1,2,srad);
draw z2{down}..z20{-pdir};

draw z3{pdir}..z4{right}..z5{pdir};

ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "r"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{s}
% The letter `s'. This is a `long' S.
%    \begin{macrocode}
cmchar "IMIN letter s";
beginchar("s", 2sb#+hstretch*(3/4x_height#+jut#), 
               asc_height#, desc_depth#);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut; top y1=h/ascratio; bot y2=-1/2d;
lft x20=pcshiftx; bot y20=-d;
%% flick
x4=x2; y4 = 1/2h/ascratio;
rt x6=w-pcshiftx; y6 = 2/3h;
x5 = 2/3[x4,x6]; top y5=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);            % stem
draw z2{down}..z20{-pdir};
draw_flatserif(1,2,srad); 
draw z4{up}...z5{right}...z6; 
ductus:=false;
penlabels(1,2,3,4,5,6,7,11,17,20,26,27,28,100);
endchar; % end "s"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{t}
% The letter `t'.
%    \begin{macrocode}
cmchar "IMIN letter t";
beginchar("t", 2sb#+hstretch*(5/4x_height#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% bar
lft x1 = pcshiftx; top y1=h; rt x2=w-pcshiftx; bot y2=h;
n1 := w;     % width of bowl
n2 := h;     % height of bowl
z3=1/2[z1,z2];
lft x4 = pcshiftx + 1/8n1; y4 = 1/2h;
x5=x3; bot y5 = 0;
rt x6 = pcshiftx + 3/4n1; top y6 = 1/4h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1{pdir}..z3..z2{pdir};           % bar
draw z3..z4{down}..z5{right}..z6{pdir};
ductus:=false;
penlabels(1,2,3,4,5,6,11,12,100);
endchar; % end "t"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{u}
% The letter `u'. 
%    \begin{macrocode}
cmchar "IMIN letter u";
beginchar("u", 2sb#+hstretch*(5/8x_height#+2jut#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x3=w-pcshiftx-jut; y3=y1;
x4=x3; bot y4=0;
z33=1/4[z4,z3];  % start of bowl
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}..z33{pdir};
draw_flatserif(1,13,srad);
draw_tstem(3,4,srad);           % right stem
draw_flatserif(3,4,srad);
draw_roundserif(4,3,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,11,13,14,16,33,100);
endchar; % end "u"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{v}
% The letter `v'. 
%    \begin{macrocode}
cmchar "IMIN letter v";
beginchar("v", 2sb#+hstretch*(3/4x_height#+jut#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x3=w-pcshiftx-jut; y3=y1;
x4=x3; bot y4=0;
z33=1/4[z4,z3];  % start of bowl
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
rt x23=w-pcshiftx; y23=3/4h;
lft x26=x14; top y26=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}; % left stem
draw_flatserif(1,13,srad);
draw z14{pdir}..z23{up}..z26;

ductus:=false;
penlabels(1,2,3,4,5,11,13,14,23,26,100);
endchar; % end "v"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{w}
% The letter `w'. This is a modern version as the font did not have a W.
%    \begin{macrocode}
cmchar "IMIN letter w";
beginchar("w", 2sb#+hstretch*(x_height#+2jut#), 
               x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x5=w-pcshiftx-jut; y5=y1;
x6=x5; bot y6=0;
z53=1/4[z6,z5];  % start of bowl
% middle stem
z3 = 1/2[z1,z5];
z33=(x3,y13);
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
% middle of right bowl
x34=1/3[x3,x5]; y34=y14;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}..z33{pdir};  % left
draw_flatserif(1,13,srad); 
draw z3--z33{down}..z34{right}..z53{pdir};  % middle
draw_flatserif(3,33,srad);
draw_tstem(5,6,srad);           % right stem
draw_flatserif(5,6,srad);
draw_roundserif(6,5,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,11,13,14,33,34,53,16,100);
endchar; % end "w"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{x}
% The letter `x'.
%    \begin{macrocode}
cmchar "IMIN letter x";
beginchar("x", 2sb#+hstretch*(x_height#), 
               x_height#, desc_depth#);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
n1 := w-2pcshiftx;    % total width
n2 := thick;          % triangle side
%% diag top left to bottom right
lft x1=pcshiftx; bot y1=2/3h;
x2=pcshiftx+1/7n1; top y2=h;
x5=pcshiftx+11/14n1; bot y5=-1/4d;
rt x6=pcshiftx+n1; top y6=1/6h;
z25 = 1/3[z2,z5];
%% diag bottom left to top right
lft x10 = -w + 2pcshiftx; bot y10=-d;
x50=x5; top y50=h;
rt x60 = w -pcshiftx; bot y60=2/3h;
x40=pcshiftx+8/14n1; y40=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1..z2{right}..z5{right}..z6;    % top left to bottom right
draw z10{1/2pdir}..z25..z50{right}..z60;   % bottom left to top right
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,10,40,50,60,100);
endchar; % end "x"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{y}
% The letter `y'. Modern, but with a dot on top.
%    \begin{macrocode}
cmchar "IMIN letter y";
beginchar("y", 2sb#+hstretch*(5/8x_height#+jut#), 
               x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x3=w-pcshiftx; y3=y1;
x4=x3; bot y4=0;
z33=1/4[z4,z3];  % start of bowl
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
z50=(x3,-1/2d);
x60=x14; bot y60=-d;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}..z33{pdir};
draw_flatserif(1,13,srad);
draw_tstem(3,50,srad);           % right stem
draw z50{down}..z60{-pdir};
draw_flatserif(3,4,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,10,100);
endchar; % end "y"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{z}
% The letter `z'.
%    \begin{macrocode}
cmchar "IMIN letter z";
beginchar("z", 2sb#+hstretch*(x_height#), 
               x_height#, 0);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
%% top bar
n10 := w-2pcshiftx;   % letter width
lft x1=pcshiftx; top y1=h;
rt x2= w-pcshiftx; bot y2=y1;
%% diagonal
x3=x1; bot y3=0;
%% bowl
x4=3/4[x1,x2]; top y4 = 1/2h;
x6=x4; bot y6 = 0;
rt x5 = w-pcshiftx; y5 = 1/2[y4,y6];
x7=1/2[x3,x5]; y7 = 1/2[y6,y5];
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1{right}..z2{right};              % top bar
draw_roundserif(1,2,srad);
draw z2--z3;              % diagonal
draw z3..z4{right}..z5{down}..z6{left}..z7;
ductus:=false;
penlabels(1,2,3,4,5,6,10o,10i,20o,20i,100);
endchar; % end "z"

%    \end{macrocode}
% \end{routine}
%
%
%    The end of this file
%    \begin{macrocode} 
%</min>
%    \end{macrocode}
%
%
% \subsection{The code for capital letters}
%
%    \thisfont{} `capitals' were drawn with the same pen as for the minuscules,
% and the letters were merely larger versions of the minuscules.
%
%    \begin{macrocode}
%<*maj>
% IMINU.MF Program file for Insular Minuscule `capitals'
%

%    \end{macrocode}
%
%
%
% \begin{routine}{A}
% The letter `A'.
%    \begin{macrocode}
cmchar "IMIN letter A";
beginchar("A", 2sb#+caprat*hstretch*(3/4x_height#+jut#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
path pth[];
pair pr[];
pickup quill;
n1 := w - 2pcshiftx -jut; % effective letter width
% "stem"
x1 = pcshiftx + 2/3n1; top y1=h;
rt x2 = pcshiftx + n1; bot y2=0;

z16 = 1/6[z2,z1];
rt x6 = x16; y6=y16;

lft x4 = pcshiftx; y4 = 1/2h;

% stem path
pth1 := z1{down}..z2;
pr1 := direction 1 of pth1;
z20 = z2 shifted -10pr1;

%%ductus:=true;
if ductus:
  pickup stylus;
else:
  % draw stem
  draw pth1;
  draw_roundserif(2,20,srad);
  % draw bowl
  draw z1{-pdir}..z4{down}..z6{pdir};
fi
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,100);
endchar; % end "A"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{B}
% The letter `B'. 
%    \begin{macrocode}
cmchar "IMIN letter B";
beginchar("B", 2sb#+caprat*hstretch*(3/4x_height#), 
               caprat*asc_height#, 0);
adjust_fit(0,0);
numeric n[];
path pth[];
pcshiftx := sb;
pickup quill;
n1:=w-2pcshiftx;    % actual letter width
n2:=h/ascratio;    % top of bowl
lft x1 = pcshiftx+jut; top y1=h;
lft x3 = pcshiftx; y3=1/2n2;
rt x5 = w-pcshiftx; y5=y3;
x4 = 1/2[x3,x5]; bot y4=0;
x6=x4; top y6=n2;
pth1 := z1..z3{down}..z4{right}.. z5{up};
z98=(0,3/4n2); z99=(w,y98);
pth2 := z98--z99;
z7 = pth1 intersectionpoint pth2;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1..z3{down}..z4{right}..z5{up}..z6{left}..z7{-pdir};
draw_flatserif(1,7,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "B"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{C}
% The letter `C'.
%    \begin{macrocode}
cmchar "IMIN letter C";
beginchar("C", 2sb#+caprat*hstretch*(5/8x_height#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
n1:=w-2pcshiftx;     % actual letter width
n2:=6/5w-2pcshiftx;  % width of full bowl
x1=pcshiftx + 1/2n1; top y1 = h;
lft x2 = pcshiftx; y2 = 1/2h;
x3 = x1; bot y3 = 0;
rt x4 = w-pcshiftx; y4 = 1/4h;
x24 = x4; y24 = 3/4h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z24..z1{left}..z2{down}..z3{right}..z4{pdir};
ductus:=false;
penlabels(1,2,3,4,5,6,14,16,17,18,100);
endchar; % end "C"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{D}
% The letter `D'. There is a choice between a curved and straight stem.
% I have done the straight one.
%    \begin{macrocode}
cmchar "IMIN letter D";
beginchar("D", 2sb#+caprat*hstretch*(3/4x_height#), 
               caprat*asc_height#, 0);
adjust_fit(0,0);
numeric n[];
path pth[];
pcshiftx := sb;
pickup quill;
lft x1=pcshiftx; top y1=h;
rt x3 = w-pcshiftx; y3 = 1/2h/ascratio;
x4 = 1/2[x1,x3]; bot y4 = 0;
z5=(x1,y3);
z98=(0,h/ascratio); z99=(w,y98); pth2 := z98--z99;
pth1 := z1{-ppdir}..z3{down}..z4{left};
z6 = pth1 intersectionpoint pth2;
if ductus:
  pickup stylus;
fi
draw z1{-ppdir}..z3{down}..z4{left}..z5{up}..z6{pdir};
ductus:=false;
penlabels(0,1,2,3,4,5,6,7,8,100);
endchar; % end "D"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{E}
% The letter `E'.
%    \begin{macrocode}
cmchar "IMIN letter E";
beginchar("E", sb#+caprat*hstretch*(5/4x_height#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
path pth[];
pickup quill;
n1 := w-pcshiftx;    % actual letter width
n2 := 4/8n1;   % width of bowl
x1 = pcshiftx + 5/8n2; top y1=h;
lft x2 = pcshiftx; y2 = 1/2h;
x3 = pcshiftx + 1/2n2; bot y3 = 0;
rt x4 = pcshiftx + n2; y4 = 1/4h;
z98=(0,3/8h); z99=(w,y98);
pth1 := z98--z99;
pth2 := z1{left}..z2{down}..z3{right};
z7 = pth1 intersectionpoint pth2;
rt x9 = w-pcshiftx; y9 = 3/4h;
z8=1/2[z7,z9];
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z7{pdir}..z1{left}..z2{down}..z3{right}..z4{pdir};
draw z7{pdir}..z8{right}..z9{pdir};
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "e"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{F}
% The letter `F'. 
%    \begin{macrocode}
cmchar "IMIN letter F";
beginchar("F", 2sb#+caprat*hstretch*(3/4x_height#+jut#), 
               caprat*(x_height#), desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; y2=-1/2d;
lft x20=0; bot y20=-d;
%% bottom bar
z4=(rt x1,-thin); rt x6=w-pcshiftx; y6=y4+2thin; z5=1/2[z4,z6];
%% top bar
x7= x1; bot y7 = 1/2h;
rt x9= w-pcshiftx; y9 = 1/2[y7,y1];
x8 = 2/3[x7,x9]; top y8 = h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);            % stem
draw z2{down}..z20{-pdir};
draw_flatserif(1,2,srad);  
draw z4{dir(45)}..z5{right}..z6{dir(45)};   % bottom bar
draw z7..z8..z9;     % top bar
ductus:=false;
penlabels(1,2,3,4,5,6,7,100);
endchar; % end "F"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{G}
% The letter `G'. 
%    \begin{macrocode}
cmchar "IMIN letter G";
beginchar("G", 2sb#+caprat*hstretch*(x_height#), 
               caprat*x_height#, desc_depth#);
adjust_fit(0,0);
path pth[];
pair vec[];
pcshiftx := sb;
pickup quill;
%% top bar
lft x1=pcshiftx; top y1=h; rt x2=w-pcshiftx; top y2=h;
x3=1/2[x1,x2]; bot y3=1/8h;
rt x5 = w-pcshiftx; y5 = -1/2d;
x6 = x3; bot y6 = -d;
x7 = 1/2[x1,x3]; y7 = y5;
x8=x3; y8 = -y3;
%%ductus:=true;
if ductus:
  pickup stylus;
  draw z1--z2;               % top bar
  draw pth1; draw pth2;      % curves
  draw rt z8--z9;            % diagonal
else:
  draw z1--z2;
  draw z2--z3;
  draw z3{pdir}..z5{down}..z6{left}..z7{up}..z8{pdir};
  draw_roundserif(1,2,srad);
fi
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "G"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{H}
% The letter `H'.
%    \begin{macrocode}
cmchar "IMIN letter H";
beginchar("H", 2sb#+caprat*hstretch*(7/8x_height#+jut#), 
               caprat*asc_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
numeric n[];
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=0;
%% bowl
z3=1/2[z2,z1];
rt x5 = w-pcshiftx; y5=y3;
x4=1/2[x3,x5]; top y4 = h/ascratio;
lft x6=x4; bot y6=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                       % stem
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
draw z3{pdir}..z4..z5..z6{-pdir};

ductus:=false;
penlabels(1,2,3,4,5,6,100);
endchar; % end "H"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{I}
% The letter `I'.
%    \begin{macrocode}
cmchar "IMIN letter I";
beginchar("I", 2sb#+caprat*hstretch*(thick#+2jut#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=0;
%%ductus:=true;
draw_tstem(1,2,srad);
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
ductus:=false;
penlabels(1,2,100);
endchar; % end "i"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{J}
% The letter `J'. This letter was not in the script, it being a later invention.
%    \begin{macrocode}
cmchar "IMIN letter J";
beginchar("J", sb#+caprat*hstretch*(3/8x_height#), 
               caprat*x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% stem
rt x1 = w-pcshiftx; top y1 = h;
x2=x1; y2=-1/2d;
%% bottom hook
lft x3 = 0; bot y3 = -d;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z2;               % stem
draw_flatserif(1,2,srad);
draw z2{down}..z3{-pdir};               % hook
ductus:=false;
penlabels(1,2,3,100);
endchar; % end "J"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{K}
% The letter `K'.
%    \begin{macrocode}
cmchar "IMIN letter K";
beginchar("K", 2sb#+caprat*hstretch*(x_height#+jut#), 
               caprat*asc_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; y2=-1/2d;
lft x20=pcshiftx; bot y20=-d;
%% top arm
z3=(x1,1/2h/ascratio);
rt x5=w-pcshiftx; y5=1/2[y3,y4];
x4=1/2[x3,x5]; top y4=h/ascratio;
%% lower arm
x7=x5; bot y7=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);            % stem
draw z2{down}..z20{-pdir};
draw_flatserif(1,2,srad);
draw z3..z4{right}..z5;          % upper arm
draw z3..{right}z7;              % lower arm
ductus:=false;
penlabels(1,2,3,4,5,100);
endchar; % end "K"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{L}
% The letter `L'. 
%    \begin{macrocode}
cmchar "IMIN letter L";
beginchar("L", 2sb#+caprat*hstretch*(3/4x_height#), 
               caprat*asc_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
lft x2=pcshiftx; y2=1/5h;
x1=x2+jut; top y1=h;
rt x4=w-pcshiftx; y4=1/5h;
x3=1/2[x2,x4]; bot y3=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1{down}..z2..z3{right}..z4;
draw_flatserif(1,2,srad);
ductus:=false;
penlabels(1,2,3,4,100);
endchar; % end "L"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{M}
% The letter `M'. 
%    \begin{macrocode}
cmchar "IMIN letter M";
beginchar("M", 2sb#+caprat*hstretch*(x_height#+2jut#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
path pth[];
pickup quill;
%% left stem
lft x1=pcshiftx+jut; top y1=h;
x2=x1; bot y2=0;
%% start of bowl
x13=x1; y13=3/4h;
%% bottom of right and middle stems
rt x6 = w -pcshiftx - jut; y6=y2;
z4 = 1/2[z2,z6];
%% top of middle and right stems
x3=x4; y3=y1;
x5=x6; y5=y13;
%% top of bowls
x14=2/3[x13,x3]; top y14 = h;
x33=x4; y33=y13;
x34=2/3[x33,x5]; y34 = y14;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                             % left half
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
draw z13{pdir}..z14{right}..z33{down}--z4;
draw_roundserif(4,3,srad);
draw z33{pdir}..z34{right}..z5{down}--z6;
draw_roundserif(6,5,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,13,14,33,34,100);
endchar; % end "M"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{N}
% The letter `N'. This could be like a capital `N' or a lower-case `n'.
% I have chosen to do the first form.
%    \begin{macrocode}
cmchar "IMIN letter N";
beginchar("N", 2sb#+caprat*hstretch*(3/4x_height#+2jut#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% left stem
lft x1=pcshiftx+jut; top y1=h;
x2=x1; bot y2=0;
%% right stem
rt x3=w-pcshiftx-jut; y3=y1;
z4=(x3,y2);
%% bar
z5=3/8[lft z2, lft z1]; z6=2/8[rt z4,rt z3];
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                % left stem
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
draw_tstem(3,4,srad);                % right stem
draw_flatserif(3,4,srad);
draw_roundserif(4,3,srad);
draw z5{right}..z6{right};                         % bar
ductus:=false;
penlabels(1,2,3,4,5,6,100);
endchar; % end "N"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{O}
% The letter `O'.
%    \begin{macrocode}
cmchar "IMIN letter O";
beginchar("O", 2sb#+caprat*hstretch*(3/4x_height#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
lft x1=pcshiftx; rt x3=w-pcshiftx; y1=y3=h/2;
x2=x4=w/2; top y2=h+o; bot y4=-o;
draw z1..z2..z3..z4..cycle;
z5=(pcshiftx,-o);
obowl(5, w-2pcshiftx, h+2o);
%%ductus:=true;
if ductus:
  pickup stylus;
  draw obfirst; draw obsecond; draw obouter; draw obinner;
else:
%%  fill obouter; unfill obinner;
fi
ductus:=false;
penlabels(1,2,3,4,5,100);
endchar; % end "O"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{P}
% The letter `P'.
%    \begin{macrocode}
cmchar "IMIN letter P";
beginchar("P", 2sb#+caprat*hstretch*(3/4x_height#+jut#), 
               caprat*x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=-1/2d;
lft x20 = pcshiftx; bot y20 = -d;
%% bowl                        % from "h"
z3=3/4[(x1,0),z1];
rt x5 = w-pcshiftx; y5=y3;
x4=1/2[x3,x5]; top y4 = h;
lft x6=x4; bot y6=0;

%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                         % stem
draw_flatserif(1,2,srad);
draw z2{down}..z20{-pdir};
draw z3{pdir}..z4..z5..z6{-pdir};             % bowl (from h)
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,100);
endchar; % end "P"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{Q}
% The letter `Q'. 
%    \begin{macrocode}
cmchar "IMIN letter Q";
beginchar("Q", 2sb#+caprat*hstretch*(3/4x_height#), 
               caprat*x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% right stem
rt x1=w-pcshiftx; top y1=h;
x2=x1; bot y2=-1/2d;
x20 = x1-jut; bot y20=-d;
%% bowl
z3=1/4[(x1,0),z1];
lft x5=pcshiftx; y5=y3;
x4=1/2[x3,x5]; bot y4=0;
x6=x1-jut; top y6=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);  
draw z2{down}..z20{-pdir};                            % stem
draw_flatserif(1,2,srad);
draw z3{-pdir}..z4{left}..z5{up}..z6{pdir};
ductus:=false;
penlabels(0,1,2,3,4,5,6,7,8,100);
endchar; % end "Q"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{R}
% The letter `R'.
%    \begin{macrocode}
cmchar "IMIN letter R";
beginchar("R", sb#+caprat*hstretch*(3/4x_height#+jut#), 
               caprat*x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut;
top y1=h; bot y2=-1/2d;
lft x20 = pcshiftx; bot y20 = -d;
%% bowl                        % almost a "p" bowl
z3=3/4[(x1,0),z1];
rt x5 = w-pcshiftx; y5=y3;
x4=1/2[x3,x5]; top y4 = h;
x100=x1; bot y100 = 0;
lft x6= rt x100; y6=y100;

rt x26=w-pcshiftx; y26=-1/6d;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);                         % stem
draw_flatserif(1,2,srad);
draw z2{down}..z20{-pdir};
draw z3{pdir}..z4..z5..z6{-pdir};             % bowl (from h)
draw z6{-ppdir}..z26{pdir};                  % leg
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,100);
endchar; % end "R"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{S}
% The letter `S'. This is a `long' S.
%    \begin{macrocode}
cmchar "IMIN letter S";
beginchar("S", 2sb#+caprat*hstretch*(3/4x_height#+jut#), 
               caprat*asc_height#, desc_depth#);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
%% stem
lft x1=lft x2=pcshiftx+jut; top y1=h/ascratio; bot y2=-1/2d;
lft x20=pcshiftx; bot y20=-d;
%% flick
x4=x2; y4 = 1/2h/ascratio;
rt x6=w-pcshiftx; y6 = 2/3h;
x5 = 2/3[x4,x6]; top y5=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);            % stem
draw z2{down}..z20{-pdir};
draw_flatserif(1,2,srad); 
draw z4{up}...z5{right}...z6; 
ductus:=false;
penlabels(1,2,3,4,5,6,7,11,17,20,26,27,28,100);
endchar; % end "S"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{T}
% The letter `T'.
%    \begin{macrocode}
cmchar "IMIN letter T";
beginchar("T", 2sb#+caprat*hstretch*(5/4x_height#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% bar
lft x1 = pcshiftx; top y1=h; rt x2=w-pcshiftx; bot y2=h;
n1 := w;     % width of bowl
n2 := h;     % height of bowl
z3=1/2[z1,z2];
lft x4 = pcshiftx + 1/8n1; y4 = 1/2h;
x5=x3; bot y5 = 0;
rt x6 = pcshiftx + 3/4n1; top y6 = 1/4h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1{pdir}..z3..z2{pdir};           % bar
draw z3..z4{down}..z5{right}..z6{pdir};
ductus:=false;
penlabels(1,2,3,4,5,6,11,12,100);
endchar; % end "T"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{U}
% The letter `U'. 
%    \begin{macrocode}
cmchar "IMIN letter U";
beginchar("U", 2sb#+caprat*hstretch*(5/8x_height#+2jut#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x3=w-pcshiftx-jut; y3=y1;
x4=x3; bot y4=0;
z33=1/4[z4,z3];  % start of bowl
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}..z33{pdir};
draw_flatserif(1,13,srad);
draw_tstem(3,4,srad);           % right stem
draw_flatserif(3,4,srad);
draw_roundserif(4,3,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,11,13,14,16,33,100);
endchar; % end "U"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{V}
% The letter `V'. 
%    \begin{macrocode}
cmchar "IMIN letter V";
beginchar("V", 2sb#+caprat*hstretch*(3/4x_height#+jut#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x3=w-pcshiftx-jut; y3=y1;
x4=x3; bot y4=0;
z33=1/4[z4,z3];  % start of bowl
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
rt x23=w-pcshiftx; y23=3/4h;
lft x26=x14; top y26=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}; % left stem
draw_flatserif(1,13,srad);
draw z14{pdir}..z23{up}..z26;
ductus:=false;
penlabels(1,2,3,4,5,11,13,14,23,26,100);
endchar; % end "V"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{W}
% The letter `W'. This is a modern version as the font did not have a W.
%    \begin{macrocode}
cmchar "IMIN letter W";
beginchar("W", 2sb#+caprat*hstretch*(x_height#+2jut#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x5=w-pcshiftx-jut; y5=y1;
x6=x5; bot y6=0;
z53=1/4[z6,z5];  % start of bowl
% middle stem
z3 = 1/2[z1,z5];
z33=(x3,y13);
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
% middle of right bowl
x34=1/3[x3,x5]; y34=y14;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}..z33{pdir};  % left
draw_flatserif(1,13,srad); 
draw z3--z33{down}..z34{right}..z53{pdir};  % middle
draw_flatserif(3,33,srad);
draw_tstem(5,6,srad);           % right stem
draw_flatserif(5,6,srad);
draw_roundserif(6,5,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,11,13,14,33,34,53,16,100);
endchar; % end "W"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{X}
% The letter `X'.
%    \begin{macrocode}
cmchar "IMIN letter X";
beginchar("X", 2sb#+caprat*hstretch*(x_height#), 
               caprat*x_height#, desc_depth#);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
n1 := w-2pcshiftx;    % total width
n2 := thick;          % triangle side
%% diag top left to bottom right
lft x1=pcshiftx; bot y1=2/3h;
x2=pcshiftx+1/7n1; top y2=h;
x5=pcshiftx+11/14n1; bot y5=-1/4d;
rt x6=pcshiftx+n1; top y6=1/6h;
z25 = 1/3[z2,z5];
%% diag bottom left to top right
%%x10=x1; bot y10=-d;
lft x10 = -w + 2pcshiftx; bot y10=-d;
x50=x5; top y50=h;
%%rt x60=x5; bot y60=2/3h;
rt x60 = w -pcshiftx; bot y60=2/3h;
x40=pcshiftx+8/14n1; y40=h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1..z2{right}..z5{right}..z6;    % top left to bottom right
draw z10{1/2pdir}..z25..z50{right}..z60;   % bottom left to top right
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,10,40,50,60,100);
endchar; % end "X"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{Y}
% The letter `Y'. Modern style.
%    \begin{macrocode}
cmchar "IMIN letter Y";
beginchar("Y", 2sb#+caprat*hstretch*(5/8x_height#+jut#), 
               caprat*x_height#, desc_depth#);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
%% left stem
lft x1 = pcshiftx + jut; top y1 = h;
% start of bowl
x13=x1; y13=1/3h;
% right stem
rt x3=w-pcshiftx; y3=y1;
x4=x3; bot y4=0;
z33=1/4[z4,z3];  % start of bowl
% middle of bowl
x14=1/3[x1,x3]; bot y14=0;
z50=(x3,-1/2d);
x60=x14; bot y60=-d;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1--z13{down}..z14{right}..z33{pdir};
draw_flatserif(1,13,srad);
draw_tstem(3,50,srad);           % right stem
draw z50{down}..z60{-pdir};
draw_flatserif(3,4,srad);
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,10,100);
endchar; % end "Y"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{Z}
% The letter `Z'.
%    \begin{macrocode}
cmchar "IMIN letter Z";
beginchar("Z", 2sb#+caprat*hstretch*(x_height#), 
               caprat*x_height#, 0);
adjust_fit(0,0);
numeric n[];
pcshiftx := sb;
pickup quill;
%% top bar
n10 := w-2pcshiftx;   % letter width
lft x1=pcshiftx; top y1=h;
rt x2= w-pcshiftx; bot y2=y1;
%% diagonal
x3=x1; bot y3=0;
%% bowl
x4=3/4[x1,x2]; top y4 = 1/2h;
x6=x4; bot y6 = 0;
rt x5 = w-pcshiftx; y5 = 1/2[y4,y6];
x7=1/2[x3,x5]; y7 = 1/2[y6,y5];
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1{right}..z2{right};              % top bar
draw_roundserif(1,2,srad);
draw z2--z3;              % diagonal
draw z3..z4{right}..z5{down}..z6{left}..z7;
ductus:=false;
penlabels(1,2,3,4,5,6,10o,10i,20o,20i,100);
endchar; % end "Z"

%    \end{macrocode}
% \end{routine}
%
%
%
%    The end of this file
%    \begin{macrocode} 
%</maj>
%    \end{macrocode}
%
%
%
% \subsection{The punctuation file}
%
% The main punctuation marks are defined in this file.
%
%    \begin{macrocode}
%<*punct>
% IMINPUNCT.MF This file contains punctuation marks

%    \end{macrocode}
%
%
% \begin{routine}{!}
%    The `!' character, which had not been invented at this time.
%    \begin{macrocode}

cmchar "Exclamation mark";
beginchar("!", 2sb#+hstretch*(thick#+trijut#),
               asc_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
pickup quill;
x1=w/2; top y1 = h;
z3=(x1, 1/2dot_size);
z2=(x1, y3+3/2dot_size);
draw z1--z2;
draw_pdot(3,dot_size);
penlabels(1,2,3);

endchar;  % end of "!"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{?}
%    The `?' character, which had not been invented at this time.
%    \begin{macrocode}

cmchar "Question mark";
beginchar("?", 2sb#+hstretch*(3/4x_height#),
               asc_height#, 0);
adjust_fit(0,0);
pcshiftx := sb;
numeric n[];
path pth[];
pickup quill;
n1 := w-2pcshiftx;     % actual character width
n2 := 1/3h;            % height of top bowl
n3 := n2;              % height of bottom bowl
z5=(1/2w,1/2dot_size);
x4 = x5; y4=y5+3/2dot_size;
lft x1 = pcshiftx; y1 = 3/4h;
x2 = 1/2w; top y2 = h;
rt x3 = w-pcshiftx; y3 = 2/3h;

%%ductus:= true;
if ductus:
  pickup stylus;
fi
draw z1..z2{right}..z3{down}..z4{down};
draw_pdot(5, dot_size);
penlabels(1,2,3,4,5);
endchar;  % end of "?"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{,}
%    The `,' character.
%    \begin{macrocode}

cmchar "Comma";
beginchar(",",2sb#+hstretch*(comma_width#+dot_size#),x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb;
x1=w-pcshiftx-(0.5hstretch*dot_size); y1=1/2dot_size;
draw_pcomma(1,dot_size,comma_width);
penlabels(1); 
endchar; % end of ","

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{.}
%    The `.' character.
%    \begin{macrocode}

cmchar "Period";
beginchar(".",2sb#+hstretch*(dot_size#),x_height#,0);
pcshiftx:=sb;
z1=(w/2, 1/2dot_size);
draw_pdot(1,dot_size);
penlabels(1); 
endchar; % end of "."

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{:}
%    The `:' character.
%    \begin{macrocode}

cmchar "Colon";
beginchar(":",2sb#+hstretch*(dot_size#),x_height#,0);
pcshiftx:=sb;
x1=x2=w/2; y1=2/3h; y2=1/3h;
draw_pdot(1,dot_size);
draw_pdot(2,dot_size);
penlabels(1,2); 
endchar; % end ":"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{;}
%    The `;' character.
%    \begin{macrocode}

cmchar "Semicolon";
beginchar(";",2sb#+hstretch*(comma_width#+dot_size#),x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb;
x1=x2=w-pcshiftx-(0.5hstretch*dot_size); y1=2/3h; y2=1/3h;
draw_pdot(1,dot_size);
draw_pcomma(2,dot_size,comma_width);
penlabels(1,2); 
endchar; % end of ";"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{'}
%    The `'' character.
%    \begin{macrocode}

cmchar "Apostrophe";
beginchar("'",2sb#+hstretch*(comma_width#+dot_size#),4/3x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb;
x1=w-pcshiftx-(0.5hstretch*dot_size); y1=h;
draw_pcomma(1,dot_size,comma_width);
penlabels(1); 
endchar;  % end of "'"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{`}
%    The ``' character.
%    \begin{macrocode}

cmchar "Reverse apostrophe";
beginchar("`",2sb#+hstretch*(comma_width#+dot_size#),4/3x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb;
x1=pcshiftx+(0.5hstretch*dot_size); y1=h;
draw_plq(1,dot_size,comma_width);
penlabels(1); 
endchar;  % end of "`"

%    \end{macrocode}
% \end{routine}
%
% The end of this file.
%    \begin{macrocode}
%</punct>
%    \end{macrocode}
%
%
% \subsection{The ligatures and dashes file}
%
%    The ligatured letters, punctuation marks and dashes are defined in this file.
%    \begin{macrocode}
%<*lig>
% IMINLIG.MF Uncial ligatured letters, punctation and dashes

%    \end{macrocode}
%  First the ligtables.
%    \begin{macrocode}

ligtable "`": "`"=:oct"134";
ligtable "'": "'"=:oct"042"; %% , "?" kern 2u#, "!" kern 2u#;

ligtable "-": "-"=:oct"173";
ligtable oct"173": "-"=:oct"174";

%%%%ligtable "f": "i"=:oct"014";

%    \end{macrocode}
%
% \begin{routine}{''}
%   The `''' ligature.
%    \begin{macrocode}

cmchar "Closing quotes";
beginchar(oct"042",2sb#+hstretch*(comma_width#+3dot_size#),4/3x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb;
x1=w-pcshiftx-(0.5hstretch*dot_size); y1=y2=h;
x2=x1-(2hstretch*dot_size);
draw_pcomma(1,dot_size,comma_width);  % right
draw_pcomma(2,dot_size,comma_width);  % left
penlabels(1,2); 
endchar; % end of "''"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{``}
%   The ```' ligature.
%    \begin{macrocode}

cmchar "Opening quotes";
beginchar(oct"134",2sb#+hstretch*(comma_width#+3dot_size#),4/3x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb;
x1=pcshiftx+(0.5hstretch*dot_size); y1=y2=h;
x2=x1+(2hstretch*dot_size);
draw_plq(1,dot_size,comma_width); % left
draw_plq(2,dot_size,comma_width); % right
penlabels(1,2); 
endchar; % end of "``"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{-}
%   The `-' (hyphen) character.
%    \begin{macrocode}

cmchar "Hyphen";
beginchar("-",sb#+hstretch*(0.8x_height#),x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb/2;
numeric alpha; alpha:=w/8;
%%pickup quill;
%%lft x1 = pcshiftx; rt x2=w-pcshiftx; y1=y2=h/2;
%%x11=lft x1+alpha/2; y11=top y1-0.5thin;
%%x12=rt x2; y12=bot y1+0.5thin;
%%draw_triangle(11,alpha);
%%draw_rutriangle(12,alpha);
pickup thickstylus;
lft x21=pcshiftx; rt x22=w-pcshiftx; y21=y22=1/2h;
draw z21--z22;
draw_roundserif(21,22,srad); draw_flatserif(22,21,srad);
penlabels(1,2); 
endchar; % end of "-"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{--}
%   The `--' (en-dash) ligature. 
%    \begin{macrocode}

cmchar "En dash";
beginchar(oct"173",sb#+hstretch*(x_height#),x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb/2;
numeric alpha; alpha:=w/8;
pickup quill;
%%lft x1 = pcshiftx; rt x2=w-pcshiftx; y1=y2=h/2;
%%x11=lft x1+alpha/2; y11=top y1-0.5thin;
%%x12=rt x2; y12=bot y1+0.5thin;
%%draw_triangle(11,alpha);
%%draw_rutriangle(12,alpha);
pickup thickstylus;
lft x21=pcshiftx; rt x22=w-pcshiftx; y21=y22=1/2h;
draw z21--z22;
draw_roundserif(21,22,srad); draw_flatserif(22,21,srad);
penlabels(1,2); 
endchar; % end of "--"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{---}
%   The `---' (em dash) ligature. The em dash is twice the width of the en dash.
%    \begin{macrocode}

cmchar "Em dash";
beginchar(oct"174",sb#+hstretch*(2x_height#),x_height#,0);
adjust_fit(0,0);
pcshiftx:=sb/2;
numeric alpha; alpha:=w/8;
pickup quill;
%%lft x1 = pcshiftx; rt x2=w-pcshiftx; y1=y2=h/2;
%%x11=lft x1+alpha/2; y11=top y1-0.5thin;
%%x12=rt x2; y12=bot y1+0.5thin;
%%draw_triangle(11,alpha);
%%draw_rutriangle(12,alpha);
pickup thickstylus;
lft x21=pcshiftx; rt x22=w-pcshiftx; y21=y22=1/2h;
draw z21--z22;
draw_roundserif(21,22,srad); draw_flatserif(22,21,srad);
penlabels(1,2); 
endchar; % end of "---"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{&}
% The ampersand (which is really an `et' ligature).
%    \begin{macrocode}

cmchar "IMIN ampersand";
beginchar("&", 2sb#+hstretch*(5/4x_height#), asc_height#, 0);
adjust_fit(0,0);
numeric n[];
path pth[];
pcshiftx:=sb;
pickup quill;
%% E part
n1 := w-pcshiftx;    % actual letter width
n2 := 4/8n1;         % width of bowl
x1 = pcshiftx + 5/8n2; top y1=h;
lft x2 = pcshiftx; y2 = 1/2h;
x3 = pcshiftx + 1/2n2; bot y3 = 0;
rt x4 = pcshiftx + n2; y4 = 1/4h;
z98=(0,3/8h); z99=(w,y98);
pth1 := z98--z99;
pth2 := z1{left}..z2{down}..z3{right};
z7 = pth1 intersectionpoint pth2;
rt x9 = w-pcshiftx; y9 = 3/4h;
z8=6/8[z7,z9];

%% T part
x18=x8; bot y18=0;
x19=5/8[x18,x9];
y19=1/8h;


%%ductus:=true;
if ductus:
  pickup stylus;
fi
%% E part
draw z7{pdir}..z1{left}..z2{down}..z3{right}..z4{up}..z8{right};
draw z7{pdir}..z8{right}..z9{pdir};
%% T bowl
draw z8{left}..z4{down}..z18{right}..z19{pdir};
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,10,16,17,18,19,31,32,33);
endchar; % end of "&"

%    \end{macrocode}
% \end{routine}
%
%
% The end of this file.
%    \begin{macrocode}
%</lig>
%    \end{macrocode}
%
% \subsection{The digits file}
%
%    These are arabic digits in the style of the book-hand. They are a
% modern invention.
%
%    \begin{macrocode}
%<*dig>
% IMINDIG.MF  Program file for Insular Minuscule digits
%

%    \end{macrocode}
% 
% 
%
% \begin{routine}{1}
% The digit `1'.
%    \begin{macrocode}
cmchar "Uncial digit 1";
beginchar("1", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
y100 = h/2; x100 = pcshiftx+y100;  % square center
pickup quill;
x1=x2=w/2;
y1=h; bot y2=0;
%%ductus:=true;
draw_tstem(1,2,srad);
draw_flatserif(1,2,srad);
draw_roundserif(2,1,srad);
ductus:=false;
proofpcbb(100, y100, y100);
penlabels(1,2,100);
endchar; % end "1"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{2}
% The digit `2'. 
%    \begin{macrocode}
cmchar "Uncial digit 2";
beginchar("2", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
% stem
lft x1=pcshiftx+o; top y1=h-2thin;
x2=1/2w; top y2= h+o;
rt x3=w-pcshiftx-o; y3=3/4h;
% foot
lft x5=pcshiftx; bot y5=0;
rt x6=w-pcshiftx; y6=y5;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_wave(5,6,thin);                          % foot
draw z1..z2{right}..z3{down}..{-pdir}z5wl;    % curve
ductus:=false;
penlabels(1,2,3,4,5,6,100);
endchar; % end "2"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{3}
% The digit `3'. 
%    \begin{macrocode}
cmchar "Uncial digit 3";
beginchar("3", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
% x values
lft x3=pcshiftx; x10=x3;
rt x5=w-pcshiftx; x8=x5-3thin;
x4=0.5[x3,x5];
x9=0.5[x10,x8];
%%lft x6=pcshiftx+3thin; x7=x6;
x6=1/2[x3,x9]; x7=x6;
% y values
bot y3=thin; top y10=h-2thin;
y6=0.5[y3,y10]; y7=y6;
bot y4=-thin; top y9=h+thin;
y5=0.5[y3,y6];
y8=11/12[y7,y10];
%%ductus:=true;
if ductus:
  pickup stylus;
fi
%%draw z3..z4{right}..z5{up}...{-pdir}z6;                 % bottom bowl
%%draw z7{pdir}..z8{up}..z9{left}..z10;                   % top bowl
draw z3..z4{right}..z5{up}...{left}z6;                 % bottom bowl
draw z7{right}..z8{up}..z9{left}..z10;                   % top bowl
ductus:=false;
penlabels(1,2,3,4,5,6,7,8,9,10,100);
endchar; % end "3"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{4}
% The digit `4'.
%    \begin{macrocode}
cmchar "Uncial digit 4";
beginchar("4", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
% the stem
x1=x2=w-pcshiftx-jut;
y1=h; bot y2=0;
% the crossbar
lft x3=pcshiftx; y3=0.33h;
rt x4=w-pcshiftx; y4=y3;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_tstem(1,2,srad);              % main stem
draw_wave(3,4,thin);               % crossbar
draw z3wl--z1;                     % diagonal
ductus:=false;
penlabels(1,2,3,4,100);
endchar; % end "4"

%    \end{macrocode}
% \end{routine}
%
%
%
% \begin{routine}{5}
% The digit `5'.
%    \begin{macrocode}
cmchar "Uncial digit 5";
beginchar("5", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
% for the top
rt x1=w-pcshiftx; top y1=h;
lft x2=pcshiftx; y2=y1;
% the S curve
x3=x2; y3=0.5h+thin;
x4=0.5[x1,x3]; y4=0.5[y3,y5];
rt x5=w-pcshiftx; y5=0.3h;
x6=w/2; bot y6=0;
lft x7=pcshiftx; bot y7=2thin;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_wave(2,1,thin);                      % top squiggle
draw z3{pdir}..z5{down}..z6{left}..z7;    % curve
draw z2wl--z3;                            % vertical
ductus:=false;
penlabels(1,2,3,4,5,6,7,100);
endchar; % end "5"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{6}
% The digit `6'.
%    \begin{macrocode}
cmchar "Uncial digit 6";
beginchar("6", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
rt x1=w-pcshiftx; top y1=h-2thin;
x2=1/2w; top y2= h;
lft x3=pcshiftx; y3=1/2h;
x4=x2; bot y4=0;
rt x5=w-pcshiftx; y5=1/4h;
lft x6=rt x3; bot y6=y3;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1..z2{left}..z3{down}..z4{right}..z5{up}..{-pdir}z6;
ductus:=false;
penlabels(1,2,3,4,5,6,100);
endchar; % end "6"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{7}
% The digit `7'.
%    \begin{macrocode}
cmchar "Uncial digit 7";
beginchar("7", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
% top bar
lft x1=pcshiftx;
rt x2=w-pcshiftx;
top y1=top y2=h;
% bowed leg
x4=w/2; bot y4=0;
x3=0.5[x2,x4]-3thin; y3=0.5[y2,y4];
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw_wave(1,2,thin);         % top bar
draw z1wr..z3..z4;
ductus:=false;
penlabels(1,2,3,4,5,6,100);
endchar; % end "7"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{8}
% The digit `8'.
%    \begin{macrocode}
cmchar "Uncial digit 8";
beginchar("8", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
numeric alpha; alpha:=1;
pickup quill;
lft x1=alpha*pcshiftx+o; rt x3=w-alpha*pcshiftx-o; y1=y3=3/4h;
x2=x4=w/2; top y2=h+o; bot y4=-o;
x5=x2; y5=h/2+2o;
lft x11=pcshiftx; rt x13=w-pcshiftx; y11=y13=1/4h;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1..z2..z3..z5..z11..z4..z13..z5..cycle;
ductus:=false;
penlabels(1,2,3,4,5,11,13,100);
endchar; % end "8"

%    \end{macrocode}
% \end{routine}
%
% \begin{routine}{9}
% The digit `9'.
%    \begin{macrocode}
cmchar "Uncial digit 9";
beginchar("9", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
pickup quill;
lft x1=pcshiftx; bot y1=2thin;
x2=1/2w; bot y2= 0;
rt x3=w-pcshiftx; y3=1/2h;
x4=x2; top y4=h;
lft x5=pcshiftx; y5=3/4h;
rt x6=lft x3; top y6=y3;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1..z2{right}..z3{up}..z4{left}..z5{down}..{pdir}z6;
ductus:=false;
penlabels(1,2,3,4,5,6,100);
endchar; % end "9"

%    \end{macrocode}
% \end{routine}
%
%
% \begin{routine}{0}
% The digit `0'.
%    \begin{macrocode}
cmchar "Uncial digit 0";
beginchar("0", 2u#+fig_width#, fig_height#, 0);
adjust_fit(0,0);
pcshiftx := u;
y100 = h/2; x100 = pcshiftx+y100;  % square center
pickup quill;
lft x1=pcshiftx; rt x3=w-pcshiftx; y1=y3=h/2;
x2=x4=w/2; top y2=h+o; bot y4=-o;
%%ductus:=true;
if ductus:
  pickup stylus;
fi
draw z1..z2..z3..z4..cycle;
ductus:=false;
proofpcbb(100, y100, y100);
penlabels(1,2,3,4,100);
endchar; % end "0"

%    \end{macrocode}
% \end{routine}
%
%
% The end of this file.
%    \begin{macrocode}
%</dig>
%    \end{macrocode}
%
%
% \section{The font definition files} \label{sec:fd}
%
%    The font comes in normal and bold weights only.
%
%    \begin{macrocode}
%<*fdot1>
\DeclareFontFamily{OT1}{imin}{}
  \DeclareFontShape{OT1}{imin}{m}{n}{ <-8.5> imin7 <8.5-15> imin10 <15-> imin17 }{} 
  \DeclareFontShape{OT1}{imin}{m}{sl}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{OT1}{imin}{m}{it}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{OT1}{imin}{m}{sc}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{OT1}{imin}{m}{u}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{OT1}{imin}{bx}{n}{ <-8.5> iminb7 <8.5-15> iminb10 <15-> iminb17 }{}
  \DeclareFontShape{OT1}{imin}{bx}{it}{ <-> sub * imin/bx/n }{}
  \DeclareFontShape{OT1}{imin}{bx}{sl}{ <-> sub * imin/bx/n }{}
  \DeclareFontShape{OT1}{imin}{b}{n}{ <-> sub * imin/bx/n }{}
%</fdot1>
%    \end{macrocode}
%
%
%    \begin{macrocode}
%<*fdt1>
\DeclareFontFamily{T1}{imin}{}
  \DeclareFontShape{T1}{imin}{m}{n}{ <-8.5> imin7 <8.5-15> imin10 <15-> imin17 }{} 
  \DeclareFontShape{T1}{imin}{m}{sl}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{T1}{imin}{m}{it}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{T1}{imin}{m}{sc}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{T1}{imin}{m}{u}{ <-> sub * imin/m/n }{}
  \DeclareFontShape{T1}{imin}{bx}{n}{ <-8.5> iminb7 <8.5-15> iminb10 <15-> iminb17 }{}
  \DeclareFontShape{T1}{imin}{bx}{it}{ <-> sub * imin/bx/n }{}
  \DeclareFontShape{T1}{imin}{bx}{sl}{ <-> sub * imin/bx/n }{}
  \DeclareFontShape{T1}{imin}{b}{n}{ <-> sub * imin/bx/n }{}
%</fdt1>
%    \end{macrocode}
%
% \section{The package code} \label{sec:code}
%
% \subsection{The \Lpack{inslrmin} package}
%
%    The \Lpack{inslrmin} package is for typesetting short pieces of text
% in the \thisfont{} fonts.
%
%    Announce the name and version of the package, which requires
% \LaTeXe{}.
%    \begin{macrocode}
%<*usc>
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{inslrmin}[2002/12/30 v1.0 package for Insular Minuscule fonts]
%    \end{macrocode}
%
% \begin{macro}{\Tienc}
%  A  macro for testing the value of |\encodingdefault|.
%    \begin{macrocode}
\providecommand{\Tienc}{T1}
%    \end{macrocode}
% \end{macro}
%
%
% \begin{macro}{\iminfamily}
%    Selects the \thisfont{} font family in the OT1 or T1 encoding.
%    \begin{macrocode}
\ifx\Tienc\encodingdefault
  \newcommand{\iminfamily}{\usefont{T1}{imin}{m}{n}}
\else
  \newcommand{\iminfamily}{\usefont{OT1}{imin}{m}{n}}
\fi
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\textimin}
%    Text command for the \thisfont{} font family.
%    \begin{macrocode}
\DeclareTextFontCommand{\textimin}{\iminfamily}
%    \end{macrocode}
% \end{macro}
%
%    The end of this package.
%    \begin{macrocode}
%</usc>
%    \end{macrocode}
%
% \subsection{The \Lpack{allimin} package}
%
%    The \Lpack{allimin} package is intended for use when the entire document
% will be typeset in the book-hand. This is a minimal package. Because the
% book-hand should not contain arabic digits a fuller package would redefine
% anything numbered in \LaTeX{} to use roman instead of arabic numbering.
% Also, because of the large |\baselineskip| many other aspects of \LaTeX{}
% to do with vertical positioning should also be redefined. 
%
%
%    Announce the name and version of the package, which requires
% \LaTeXe{}. It also uses the \Lpack{inslrmin} package.
%    \begin{macrocode}
%<*uscall>
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{allimin}[2002/12/30 v1.0 package for all Insular Minuscule fonts]
\RequirePackage{inslrmin}
%    \end{macrocode}
%
% \begin{macro}{\Tienc}
%  A  macro for testing the value of |\encodingdefault|.
%    \begin{macrocode}
\providecommand{\Tienc}{T1}
%    \end{macrocode}
% \end{macro}
%
%  Redefine the default fonts to be \thisfont, which has only one family 
% member.
% \begin{macro}{\rmdefault}
% \begin{macro}{\sfdefault}
% \begin{macro}{\ttdefault}
%    \begin{macrocode}
\renewcommand{\rmdefault}{imin}
\renewcommand{\sfdefault}{imin}
\renewcommand{\ttdefault}{imin}
%    \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
%
% The `leading' in the book-hands is a function of the |x-height|, which is 
% normally much
% greater than for the CMR fonts. I have borrowed code from Frank Jensen's
% \Lpack{beton} package~\cite{BETON} to do this. The |x-height| (in points) 
% for the CMR
% fonts is given in Table~\ref{tab:cmrx}. Note that the CMR design sizes are
% 5--10, 12, and 17.28 points. The other values given are scaled from these 
% figures.
%
% \begin{table}
% \centering
% \caption{The x heights of the CMR and \thisfont{} fonts} \label{tab:cmrx}
% \begin{tabular}{ccc} \hline
% Design & CMR & \thisfont \\
% Size & X Height & X Height \\ \hline
% 5 & 2.14 & 3.00 \\     ^^A CMR skip = 6pt = 2.8 times
% 6 & 2.58 & 3.61 \\     ^^A CMR skip = 7pt = 2.7 times
% 7 & 3.00 & 4.20 \\     ^^A CMR skip = 8pt = 2.7 times
% 8 & 3.44 & 4.81 \\     ^^A CMR skip = 9.5pt = 2.8 times
% 9 & 3.86 & 5.40 \\     ^^A CMR skip = 11pt = 2.8 times
% 10 & 4.31 & 6.03 \\    ^^A CMR skip = 12pt = 2.8 times
% 11 & 4.74 & 6.64 \\    ^^A CMR skip = 13.6pt = 2.8 times
% 12 & 5.17 & 7.24 \\    ^^A CMR skip = 14.5pt = 2.8 times
% 14 & 6.03 & 8.44 \\    ^^A CMR skip = 18pt = 3.0 times
% 17 & 7.44 & 10.41 \\    ^^A CMR skip = 22pt = 3.0 times
% 20 & 8.75 & 12.25  \\   ^^A CMR skip = 25pt = 2.9 times
% 25 & 10.94 & 15.32 \\  ^^A CMR skip = 30pt = 2.7 times
% \hline
% \end{tabular}
% \end{table}
%
% \begin{macro}{\imin@baselineskip@table}
% A table of the normal font sizes and the corresponding baselineskip.
% The distance between baselines for \thisfont{} is over twice 
% the |x-height|.  ^^A actually 2.5 times to nearest half point
% 
%    \begin{macrocode}
\newcommand{\imin@baselineskip@table}{%
  <\@vpt>7.5%
  <\@vipt>9.0%
  <\@viipt>10.5%
  <\@viiipt>12.0%
  <\@ixpt>13.5%
  <\@xpt>15.0%
  <\@xipt>16.5%
  <\@xiipt>18.0%
  <\@xivpt>21.0%
  <\@xviipt>26.0%
  <\@xxpt>30.5%
  <\@xxvpt>38.5}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\imin@new@setfontsize}
%  This is a macro that replaces the |\@setfontsize| macro which is called by
% the font size changing commands.
%    \begin{macrocode}
\newcommand{\imin@new@setfontsize}[3]{%
  \edef\@tempa{\def\noexpand\@tempb####1<#2}%
  \@tempa>##2<##3\@nil{\def\imin@baselineskip@value{##2}}%
  \edef\@tempa{\noexpand\@tempb\imin@baselineskip@table<#2}%
  \@tempa><\@nil
  \ifx\imin@baselineskip@value\@empty
    \def\imin@baselineskip@value{#3}%
  \fi
  \imin@old@setfontsize{#1}{#2}\imin@baselineskip@value}
%    \end{macrocode}
% \end{macro}
%
% We had better give an author a means of using The Computer Modern fonts
% if necessary.
%
% \begin{macro}{\cmrfamily}
% \begin{macro}{\cmssfamily}
% \begin{macro}{\cmttfamily}
%    These macros select the Computer Modern Roman, Sans, and Typewriter 
% font families in either the T1 or OT1 encodings.
%    \begin{macrocode}
\ifx\Tienc\encodingdefault
  \providecommand{\cmrfamily}{\usefont{T1}{cmr}{m}{n}}
  \providecommand{\cmssfamily}{\usefont{T1}{cmss}{m}{n}}
  \providecommand{\cmttfamily}{\usefont{T1}{cmtt}{m}{n}}
\else
  \providecommand{\cmrfamily}{\usefont{OT1}{cmr}{m}{n}}
  \providecommand{\cmssfamily}{\usefont{OT1}{cmss}{m}{n}}
  \providecommand{\cmttfamily}{\usefont{OT1}{cmtt}{m}{n}}
\fi
%    \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\textcmr}
%    Text command for the Computer Modern Roman font family.
%    \begin{macrocode}
\DeclareTextFontCommand{\textcmr}{\cmrfamily}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\textcmss}
%    Text command for the Computer Modern Sans font family.
%    \begin{macrocode}
\DeclareTextFontCommand{\textcmss}{\cmssfamily}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\textcmtt}
%    Text command for the Computer Modern Typewriter font family.
%    \begin{macrocode}
\DeclareTextFontCommand{\textcmtt}{\cmttfamily}
%    \end{macrocode}
% \end{macro}
%
%
% At the start of the document, change the |\@setfontsize| macro and call
% the normal font to implement the change.
%    \begin{macrocode}
\AtBeginDocument{%
  \let\imin@old@setfontsize=\@setfontsize
  \let\@setfontsize=\imin@new@setfontsize}
\AtBeginDocument{\normalsize}
%    \end{macrocode}
%
%
%    The end of this package.
%    \begin{macrocode}
%</uscall>
%    \end{macrocode}
%
%
%
%
%
% \Finale
% \PrintIndex
%
\endinput

%% \CharacterTable
%%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%%   Digits        \0\1\2\3\4\5\6\7\8\9
%%   Exclamation   \!     Double quote  \"     Hash (number) \#
%%   Dollar        \$     Percent       \%     Ampersand     \&
%%   Acute accent  \'     Left paren    \(     Right paren   \)
%%   Asterisk      \*     Plus          \+     Comma         \,
%%   Minus         \-     Point         \.     Solidus       \/
%%   Colon         \:     Semicolon     \;     Less than     \<
%%   Equals        \=     Greater than  \>     Question mark \?
%%   Commercial at \@     Left bracket  \[     Backslash     \\
%%   Right bracket \]     Circumflex    \^     Underscore    \_
%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%%   Right brace   \}     Tilde         \~}


