"Approximate" in a somewhat ugly sense! To do it properly you need to play with vertical positions (and possibly slightly with horizontal positions).
I attach an example file in PS and PDF versions: PS: temp01.ps PDF: temp01.pdf which illustrate how to try to do it properly. Note the definition .char \[udA] \Z'\[uA]'\v'0.250m'\h'-0.005m'\[dA]\v'-0.250m' where there is a small horizontal motion to the left. This seems to be because the PS file, viewed with ghostview, uses my local ghostscript fonts, in which the overprinted arrows are slightly out of vertical alignment if this motion is not there. So with this definition the PS output looks perfect. But, when converted to PDF (using ps2pdf) they look vertically misaligned when viewed using Acrobrat Reader (presumably because the ghostscript and the Adobe fonts differ subtly). Which is why I attach both PS and PDF versions! Best wishes to all, Ted. On 29-May-2014 18:37:29 Tadziu Hoffmann wrote: > >> > added to -Tps later on, using the standard AGL name `uni21D5'. > >> [...] include this and the other 4 characters into groff in >> general for all devices. How can this be done? > > I don't think that the standard PostScript Symbol font contains > \[vA], so in general it won't be possible unless you provide > your own fonts. > > But you can approximate it by overprinting arrowdblup (\[uA]) > and arrowdbldown (\[dA]). > > > ------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@wlandres.net> Date: 29-May-2014 Time: 22:07:20 This message was sent by XFMail -------------------------------------------------
temp01.ps
Description: temp01.ps
temp01.pdf
Description: temp01.pdf
