Retro1.org codex

SO                                                        CMS Immediate command

Use the SO (Suspend tracing) command during the execution of a command or one
of your programs to temporarily suspend the recording of trace information.
Program execution continues to its normal completion and all recorded trace
information is spooled to the printer.  The format of the SO command is:
+----------+------------------------------------------------------------------+
| SO       |                                                                  |
+----------+------------------------------------------------------------------+

You can issue an Immediate command only after causing an attention interrupt by
pressing the Attention key (or its equivalent).  The command is processed as
soon as it is entered.  It is also executed immediately when stacked in an EXEC
procedure.  Any program execution in progress is suspended until the Immediate
command is processed.


Usage note:

To resume tracing, issue the RO command.