Environment Variables - MIT/GNU Scheme 9.0
Description: MIT/GNU Scheme 9.0

Next: Starting Scheme from Microsoft Windows, Previous: Custom Command-line Options, Up: Running Scheme

### 2.6 Environment Variables

Scheme refers to many environment variables. This section lists these variables and describes how each is used. The environment variables are organized according to the parts of MIT/GNU Scheme that they affect.

Environment variables that affect the microcode must be defined before you start Scheme; under unix or Windows, others can be defined or overwritten within Scheme by using the `set-environment-variable!` procedure, e.g.

         (set-environment-variable! "EDWIN_FOREGROUND" "32")