Return Codes on Exit

The oncheck utility returns the following codes on exit.
GLS failures:-1
Invalid srial/key:2
Onconfig access error:2
Invalid onconfig settings:2
Invalid arguments to oncheck:2
Error connecting database server:1
Warning reported by oncheck:1
error detected by oncheck:2
no errors detected by oncheck:0
Windows™ only:
Not properly installed:1
Authentication error:2