steppedp
STEPPEDP contentslist
STEPPED? contentslist
outputs TRUE if the first procedure, variable, or property list named
in the contents list is stepped, FALSE if not. Only the first thing
in the list is tested; the most common use will be with a word as
input, naming a procedure, but a contents list is allowed so that you
can STEPPEDP [[] [VARIABLE]] or STEPPEDP [[] [] [PROPLIST]].