Defines the directory for jBASE global files.
Valid file path
The default is the same as JBCRELEASEDIR
On UNIX it should be setup in the .profile.
On Windows it should be set before running any jBASE program.
JBCGLOBALDIR is the primary search directory for many jBASE elements (e.g. licensing, spooler, 'proc' directory, etc.). For all practical purposes, this variable retains certain dependencies with JBCRELEASEDIR, therefore it should not ever be set to a different location.