Handling Errors While Saving the Session Environment

To correctly handle errors that might occur while you are saving the session environment, place your PUSHLEVEL statement before the TRAP statement and your PUSH statements after the TRAP statement.

PUSHLEVEL 'firstlevel'
TRAP ON error
PUSH 
 ...

In the abnormal exit section of your program, place the error label (followed by a colon) and the statements that restore the session environment and handle errors. The abnormal exit section might look like this.

error:
POPLEVEL 'firstlevel'
OUTFILE EOF

These statements restore saved dimension status and option values and reroute output to the default outfile.