*roff experts, I present to you another puzzler, not groff-specific. Here's the qualifying question:
A. You probably know that the `ps` request to change the type (point)
size of the font is honored only in troff mode, not by nroff.
You likely also know that the `ls` request to set the line spacing
goes way back to before typesetter roff.
Question: is the `vs` request (which sets the vertical spacing)
honored in nroff mode?
Now, here's the challenge.
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B. In nroff (or nroff mode in groff), what _units_ is the argument to
the `vs` request reckoned in?
C. A point is less than a vee, right?
D. What does nroff do if you request to alter the vertical spacing in
points?
E. Attempt to address the foregoing questions empirically. Compare the
results to the claims of CSTR #54. Do they agree?
Enjoy your weekend!
Regards,
Branden
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