PS: One thing I forgot to mention (below) is that the token ",...," (i.e. comma and 3 dots and comma with no spaces) will place the three dots on the baseline, in line with the commas, as in
for $r ^=^ 1 , 2 ,..., N$ However, this then devolves the entire layout of the sequence to eqn. In practice, I prefer to retain control over the layout as in (for example): for $r ^=^ 1 , 2^ ,^^ldots^^, N$ Ted. On 17-Dec-10 09:18:12, Ted Harding wrote: > On 17-Dec-10 08:28:11, Cedric Sodhi wrote: >> Hello, >> according to man eqn an ellipsis of three subsequent dots will be >> replaced by a real ellipsis, whereas to get three centered dots one >> should use cdots. >> However when I enter ... I get cdots and I wouldn't know how to get a >> real ellipsis, since there does not appear to be an ellipsis glyph in >> groff_char either (typing "..." will insert three mal-aligned dots). >> >> Can anyone shed light on this? Thanks > > In eqn, to get 3 dots on the baseline, use 'ldots', as in a context > like > > for $r ^=^ 1 , 2 , ldots , N$ > > As you say, "..." produces centred dots in eqn. Groff's eqn (1.18.1) > does > not recognise the token 'cdots', and 'man eqn' does not mention it. You > may have been reading the man-page for eqn in some other version of > UNIX. > > There is an entry for ellipsis in the Symbol font, where it has octal > code 0274 = decimal 188 (but no name), so \f[S]\N'188'\fP will give you > an ellipsis, and you can define your own name for it like > > .char \[el] \f[S]\N'188'\fP > > so that (in ordinary text, i.e. outside eqn) you can write something > like > > In the International Phonetic Alphabet > A is Alpha, B is Bravo, C is Charlie, \[el] , Z is Zulu > > (Or you could call it \[...] if you prefer ... )! > > Hoping this helps, > Ted. > > -------------------------------------------------------------------- > E-Mail: (Ted Harding) <ted.hard...@wlandres.net> > Fax-to-email: +44 (0)870 094 0861 > Date: 17-Dec-10 Time: 09:18:09 > ------------------------------ XFMail ------------------------------ > -------------------------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@wlandres.net> Fax-to-email: +44 (0)870 094 0861 Date: 17-Dec-10 Time: 11:14:47 ------------------------------ XFMail ------------------------------
