Chapters:
1: Introduction
2: Simple example
3: Invocation
4: Finer Control
5: X-Y Plots
6: Contour Plots
7: Image Plots
8: Examples
9: Gri Commands
10: Programming
11: Environment
12: Emacs Mode
13: History
14: Installation
15: Gri Bugs
16: Test Suite
17: Gri in Press
18: Acknowledgments
19: License
Indices:
Concepts
Commands
Variables

### 13.1.3: Version 2.8

#### 13.1.3.1: Version 2.8.7 [2002 Apr 03]

- Fix SourceForge bug #482120 (``regress`' ignores data weights)
- Fix SourceForge bug #508657 (missing backslash in drawing undefined synonyms)

- Fix SourceForge bug #523450 (log axes detect non-positive values too late)
- Fix SourceForge bug #521045 (installation/compilation with Solaris Workshop V6 Update 2 compiler)

#### 13.1.3.2: Version 2.8.6 [2002 Feb 14]

- Fix SourceForge bug #513002 (minor documentation error in ``set clip`')
- Fix SourceForge bug #509592 (HTML docs had midordered indices)
- Fix SourceForge bug #506534 (map axes give wrong minutes in negative regions). Thanks, Brian, for the patch on this!
- Fix SourceForge bug #508088 (grimode: gv should update, not be relaunched)
- Fix SourceForge bug #506490 (``-v`' commandline option returned wrong version number)

#### 13.1.3.3: Version 2.8.5 [2001 Dec 13]

- Fix SourceForge bug #492472 (``inf`' rpn operator caused segfault)

### 13.1.4: Version 2.8.4 [2001 Oct 4]

- Fix SourceForge bug #467973 (``gri -version`' gave wrong version number, breaking the Emacs Gri mode.)
- Fix SourceForge bug #468014 (``draw grid`' disobeyed pencolor.)

#### 13.1.4.1: Version 2.8.3 [2001 Oct 1]

- Fix SourceForge bug #462243 (endian problem in Rasterfile images + reading problem in PGM images).

#### 13.1.4.2: Version 2.8.2 [2001 Sep 19]

- Fix SourceForge bug #461444 (wouldn't compile with the ``mingw32`' compiler, for windows 32 machines).
- Fix SourceForge bug #454557 (wouldn't compile with the pre-release version 3.0.1 of the GNU c++ compiler, in the case in which netCDF was already installed)

#### 13.1.4.3: Version 2.8.1 [2001 Sep 7]

- Fix SourceForge bug #450465 (``create columns from function`' was broken).
- Fix SourceForge bug #454557 (wouldn't compile with the pre-release version 3.0.1 of the GNU c++ compiler)

### 13.1.5: Version 2.8.0 [2001 Jul 30]

New command syntax

- Add ``unlink`' command as a unix-familiar way to delete files (see Unlink).
- Add ``set page size`' command to clip to a given page size (see Set Page).
- Add ``substr`' RPN operator to permit extraction of sub-strings (see Tertiary Operators).
- Add ``default`' possibility for the ``set x name`' and the ``set y name`' commands.
- Add Perl-like ability to put underscores in numerical constants, to guide your eye. These underscores are ignored by Gri, so that for example ``.v. = 1_000`' and ``.v. = 1000`' are equivalent as far as Gri is concerned.

Emacs mode (see Emacs Mode)

- Give ``M-Tab`' the ability to complete builtin variables and synonyms as well as commands
- Add ``idle-timer minibuffer help'' to display defaults for builtin variables under the cursor.
- Add fontification of builtin variables only if they are spelled correctly.

Developer changes

- Add ``make source-arch-indep`' target in sources. This will build a source tar file in which all the architecture-independent material (documentation in HTML, postscript and Info formats) is pre-made. This makes it easier to install gri on a host that doesn't have TeX and ImageMagick installed.
- Complete the port to IBM's compiler for their AIX operating system.