|  |  | 12.2 Environment variables

## 12.2 Environment variables

Ipe, ipetoipe, and iperender respect the following environment variables:

IPELATEXDIR
  the directory where Ipe runs Pdflatex.
IPEFONTMAP
  the complete path of the font map, describing where Ipe can find the 14 standard pdf fonts.
IPEDEBUG
  set to 1 for debugging output.
IPEANCIENTPDFTEX
  set this variable to use Pdftex versions older than 1.40.

The Ipe program uses several additional environment variables:

EDITOR
  external editor to use for editing text objects.
IPESTYLES
  a list of directories, separated by semicolons, where Ipe looks for stylesheets, for instance for the standard stylesheet basic.isy. You can write _ (a single underscore) for the system-wide stylesheet directory. If this variable is not set, the default consists of the system-wide stylesheet directory, plus ~/.ipe/styles on Unix, plus ~/Library/Ipe/Styles on OS X.
IPELETPATH
  a list of directories, separated by semicolons, containing ipelets. You can write _ (a single underscore) for the system-wide ipelet directory. If this variable is not set, the default consists of the system-wide ipelet directory, plus ~/.ipe/ipelets on Unix, plus ~/Library/Ipe/Ipelets on OS X.
IPEICONDIR
  directory containing icons for the Ipe user interface.
IPEDOCDIR
  directory containing Ipe documentation.
IPELUAPATH
  path for searching for Ipe Lua code.