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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; others can be defined or overwritten within Scheme by using the set-environment-variable! procedure, e.g.

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