u stands for "basic unit" ...
From https://www.gnu.org/software/groff/manual/html_node/Measurements.html
gtroff (like many other programs) requires numeric parameters to
specify various measurements. Most numeric parameters9 may have a
measurement unit attached. These units are specified as a single
character that immediately follows the number or expression. Each of
these units are understood, by gtroff, to be a multiple of its basic
unit. So, whenever a different measurement unit is specified gtroff
converts this into its basic units. This basic unit, represented by a
aCu', is a device dependent measurement, which is quite small, ranging
from 1/75th to 1/72000th of an inch. The values may be given as
fractional numbers; however, fractional basic units are always rounded
to integers.
:
((the available units explained))
On Fri, Dec 05, 2014 at 11:40:33AM +0000, Anton Shterenlikht wrote:
> Thank you, that's what I was looking for.
> The only thing I don't understand is
> what is "u" in
>
> lw(\n[w1]u)
>
> tbl says:
>
> u,U Move the corresponding column up one half-line.
>
> which I don't need, but if I remove "u",
> the formatting becomes completely broken.
>
> In my case I get good results with:
>
> .ie n \{\
> . nr LL 12.5i
> . nr c1 1i
> . nr c2 0.2i
> . nr c3 1i
> . nr c4 4i
> . nr c5 3i\}
> .el \{\
> . nr PS 9
> . nr c1 0.5i
> . nr c2 0.01i
> . nr c3 0.5i
> . nr c4 2.5i
> . nr c5 1.5i\}
> .TS H
> expand,center;
> lw(\n[c1]u) lw(\n[c2]u) lw(\n[c3]u) lw(\n[c4]u) lw(\n[c5]u).
>
> Thanks
>
> Anton
>
--
Mike Bianchi
Foveal Systems
973 822-2085
mbian...@foveal.com
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