Keywords: gildas-intro

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### Initialisation Files

All SIC based interactive programs read a initialisation file before starting. This file is a standard command procedure for the corresponding program. For example, for GREG it could contain:

    SIC\DEFINE DOUBLE SEC /GLOBAL    !
    SIC\LET SEC PI/180/3600         ! Second in Radian
    SIC\SIC HELP CONTENT            ! Use PostScript file for HELP
    GTVL\DEVICE                     ! Prompt for a graphics device

The initialisation file is located in your home directory, and its name is ```init.program''` where ```program''` is the default file extension for the application; this is usually just the application name.