If 3DE4 can't identify its install directory automatically, this environment variable allows to define the absolute path to a valid install directory to be used for the session.

A colon separated list of directories to look for additional python scripts (Windows: list is separated by semicolons).

A colon separated list of license server machines to search for a free license upon startup.

If set, 3DE4's license manager window's admin functions "Import", "Add", "Delete" and "Unlock" are disabled.

A colon separated list of directories to look for additional lens distortion plugins. (3DE4 R3b2 or higher)

Defines the absolute path to a directory where flcd4 should store its license file. The default directory is: "<3de4 install dir>/user_data/".

Unlocks zombies according to the quantity of your licenses. Comes with a shotgun for free. The more licenses you have, the more you can shoot.