Enables (value="LOWER") or disables (value="UPPER") case sensitivity for labels within routines.

It is important to have the same case handling at compile-time and run-time.

Because GT.M stores routines in RMS files and RMS does not support lower-case file names, GT.M always treats routine names as upper-case.

By default, GT.M handles labels as case sensitive. Linking a GT.M image with a modified GTM$DEFAULTS alters the default for that image. For more information on GTM$DEFAULTS see the "Program Development Cycle" chapter in this manual.