Harry,
if you fence the comment inside twin ≪if≫'s it both displays and prints. If you put the comment inside the bracket, (e.g.,≪ifthis is my dastardly comment≫) it won't print, but it only displays in extended mode.
So we got half-way there, but its a way-station I can't unfortunately use.
From: Carl Distefano
To: xywrite@xxxxxxxx
Sent: Friday, September 9, 2016 10:10 PM
Subject: Re: preventing lines from printing with substitution tables
Reply to note from Harry Binswanger
mailto:hb@xxxxxxxx Fri, 09 Sep 2016
21:26:02 -0400
You mean it still prints?
No, he means what he says: it only displays in eXPanded view!
PMJI.