HP 3000 Manuals

User Logging Programmer's Guide

Using the CLOSELOG Intrinsic 

When the application has completed accessing the logfile, the CLOSELOG
intrinsic is called.  The CLOSELOG intrinsic will post a record to
indicate all transactions for the process have been completed.

OPENLOG and CLOSELOG may be called multiple times by the same user.

MPE/iX 5.0 Documentation