> What's the purpose of the \[tno], \[t+-], \[tmu], and \[tdi]
> characters?
>
> groff_char(7) documents these characters as "text variants" of,
> respectively, \[no], \[+-], \[mu], and \[di], but provides no hints
> about when one might want to use the text variant characters and
> when the traditional versions.
\[t{no,+-,mu,di}] should be used in textual, \[{no,+-,mu,di}] in
mathematical context. Normally, the latter glyphs are special glyphs
(this is, in font `S'), and its vertical offsets make them not blend
well into surrounding text.
> The groff info pages don't mention text variants at all. This seems
> to be an oversight in the documentation.
Patches are welcomed :-)
Werner
