🚀 go-pugleaf

I'm trying to send some escape sequences through nroff (the DWB 2.0 version
running on System V.2 on Amdahl UTS) to generate some special characters
and to do some highlighting (shading) on a Xerox 9700 printer.  The
Nroff/Troff User's Manual indicates that to have text transparently copied
to the output, I should use the \! at the beginning of the line.  However,
it looks like nroff is not copying the text transparently.  For instance,
when I give it the following input:

	.DS
	\!This is shaded text.

	\!\033\033\017This is shaded text.\033\033\016
	.DE

(where the <ESC><ESC>^O is shading on and <ESC><ESC>^N is shading off) gives

	This is shaded text.				(unshaded)

	33 33 17This is shaded text.33 33 16		(unshaded)

Does anybody know the trick to having the escape sequences sent transparently
to the device?  I seem to recall this being discussed a few months ago in
this newsgroup, but I don't remember the conclusion.

Mike Holder
AT&T Denver
..!ihnp4!druhi!holder