All of the EXECUTIL operands are mutually exclusive, that is,
you can only specify one of the operands on the command.
The HI, HT, RT, TS, and TE operands on the EXECUTIL command are
also, by themselves, immediate commands. Immediate commands
are commands that can be issued from the terminal if an exec is executing
and you press the attention interrupt key and enter attention mode.
These commands are processed immediately. z/OS TSO/E REXX Reference,
describes the immediate commands.
In general, EXECUTIL works on a language processor environment basis.
That is, EXECUTIL only affects the current environment in which EXECUTIL
is issued. For example, if you are in split screen in ISPF and issue
EXECUTIL TS from the second ISPF screen to start tracing, only execs
that are invoked from that ISPF screen are traced. If you invoke
an exec from the first ISPF screen, the exec is not traced.
Using
the EXECDD and SEARCHDD operands may affect subsequent language processor environments that
are created. z/OS TSO/E REXX Reference,
describes the concept of language processor environments and
how EXECUTIL EXECDD and EXECUTIL SEARCHDD may affect more than one
environment.