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3.2 The GCAL environment variable

The environment variable GCAL can hold a set of default options for Gcal (see Environment Variable GCAL). These options are interpreted first at program start-up, and some can be overwritten by explicit command line arguments or values found in a @file response file. See Command line arguments, and Response file, for further information.

For example:

On Vax/VMS, the name of the environment variable is GCAL_OPT, to avoid a conflict with the symbol GCAL set for invocation of the program.

For example: