%F  indicates the edited PWAD file to be tested.
%WP  indicates the IWAD resource files to be used (paths included).
%WF  indicates the IWAD resource files to be used (without paths).
%L  indicates the map lump name as is set in the map options.
%AP  indicates the additional resources (if any, paths included).
%AF  indicates the additional resources (if any, without paths).
%E  indicates the Episode number from E#M# map name.
%M  indicates the Map number from E#M# or MAP## map name.