IBM SC34-6814-04 - Manual (Page 827)

LOGOFF
The terminal is both signed off and logged off.
v Specify the identifier (TRANSID) of your “good night” transaction on the GNTRAN
system initialization parameter.
If you have customized the sample program, DFH0GNIT, specify the supplied
sample transaction definition, GNIT.
If you have written your own “good night” program, named something other than
DFH0GNIT, you must create and install a transaction definition that points to your
program, and specify this definition on the GNTRAN SIT parameter.
Chapter 32. Writing a “good night” program 805