I just noticed something about QMHRTVRQ, when I have the OPM debugger
It seems that debugger breakpoint messages of the "/* Breakpoint at
Statement/Instruction /25D5 Program VIEWMAIN Recursion level 1 */"
variety are themselves request messages, and as such, I'm getting them
in my new F9 retrieval-stream. But they're evidently filtered out of the
F9 retrieval-streams of system-supplied command lines.
What is the best way to filter these (and perhaps others I don't know
about) out of an F9 retrieval-stream?