>From d...@oxytropis.plus.com Fri Dec 5 14:30:08 2014 >> >> The only thing I don't understand is >> what is "u" in >> >> lw(\n[w1]u) > >The default unit for the value in the w() modifier is en; so in my >example w1 has value (in nroff) 144000 and if you leave u off it will >be evaluated in en's (of the order of 500 feet!).
I confused stings with number registers. .nr n1 2i .ds s1 2i gives, for a device unit of 72000 n1=144000 s1="2i" Then \[n1]u is in units evaluating to 2 inches again, and \[s1] is just 2 inches. So it seems using strings is more natural. Many thanks Anton