Appendix E: APPX Environment Variables
Debugging - winprint Variables
WINPRINT_DEBUG
Specifies a log file name into which APPX will write Windows printing debug information. If you experience problems with ‘winprint.exe’, this variable will direct debug information to the specified file (in versions of winprint.exe dated 12/95 or later).
Valid values: path to a write-enabled log file
Default value: not set