Re: vim :hardcopy equivalent

[Tadziu Hoffmann]

> > a "margin" measures an extent of whitespace (or "negative space"),
> > whereas the `sp` request positions the _text baseline_,

The first is correct and the second incorrect for [g]troff.
In troff (and nroff), if you say

  .sp |0

then this does not mean "put the baseline at the top of the page"
but rather "leave zero space above the text", and correspondingly

  .sp |50p

means "leave 50 pt of space above the text", as you would expect
for margins.  Thus, troff's model somewhat follows the concepts
of metal typesetting.

Of course, troff simplifies this a bit, in the first case by putting
the baseline at 1 vee below the top of the page, and in the second
case at 50 pt + 1 vee.

Groff enables you to follow the metal typesetting model more
closely, by allowing you to split the baseline distance into
".vs" and ".pvs".  Thus, to have a baseline spacing of 20 pt,
with 14 pt above the baseline and 6 pt below the baseline, say

  .vs 14
  .pvs 6

as demonstrated in the attached example.

margin.ro
Description: Text document

margin.pdf
Description: Adobe PDF document