
	Poke_watch twiddles some bits in the p1 region of the current process,
turning on the undocumented watch facility.  The watch facility first appeared
in VMS V4.6 (I think) and provides a log of file activity.  The same features
are available by using the undocumented "SET WATCH" command.  I saw articles
about the watch feature in pageswapper.

	I wrote poke_watch so that I could track the activity of our default
proxy (DECNET) usercode.  In the login.com for user DECNET, I run Poke_watch
which is installed with CMKRNL.  All output goes to netserver.log, which I can
check if I have any need to.  This will not work in earlier versions (pre 4.6?)
of VMS, and may break in V5.0.
