"POX" means "Program to Output on Xerox".

TO OBTAIN AN XGP LISTING OF THE DOCUMENTATION FOR POX, DO THE FOLLOWING:
R POX
FOO←POX.WRU[XGP,REM]
(AFTER THE PROGRAM EXITS, HIT CARRIAGE RETURN)
(WALK OVER TO XGP TO PICK UP THE LISTING AS IT COMES OUT FIVE MINUTES LATER)

A FASTER ALTERNATIVE TO THE ABOVE IS TO TYPE THE SYSTEM COMMAND
XG @QQXGP.COM[XGP,REM]
(WALK OVER TO XGP TO PICK UP THE LISTING AS IT COMES OUT FIVE MINUTES LATER)

There is an older abridged version of the documentation which can
be viewed on your teletype, but which of course doesn't have
the examples of output format included:
TY POX.REM[UP,DOC]