On Fri, Dec 05, 2014 at 03:06:08PM +0000, Ralph Corderoy wrote: > > Is this included into any of the man pages. I tried to find, but > > couldn't, but I haven't searched all of groff man pages. > > I don't think all of groff's GNU info information is duplicated in the > man pages.
Man pages were never intended to replace all documentation. But they do serve as an excellent kicking off point. I knew the answer, but steps to look for supporting documentation were: man 7 groff search for the single letter u : /\<u\> found u Basic unit for actual output device searched for variations of the word unit : /\<unit found several mentions of "basic units" Googled groff basic units u saw The GNU Troff Manual: Measurements https://www.gnu.org/software/groff/manual/.../Measurements.html GNU Most numeric parameters may have a measurement unit attached. ... This basic unit, represented by a ' u ', is a device dependent measurement, which is quite small, ranging from 1/75th to 1/72000th of an ... Ens. In groff , this is half of an em. That's what I pointed you to which happens to be contained in info groff > groff.txt which is what Ralph suggested. Many roads lead to ... -- Mike Bianchi