[texhax] math \fontdimen

Uwe Lück uwe.lueck at web.de
Mon Feb 9 13:32:12 CET 2009

At 09:37 09.02.09, Donald Arseneau wrote:
>Uwe Lück <uwe.lueck at web.de> writes:
> > >\xheight = \fontdimen 5 \textfont 2 \relax
> >
> > Now I wonder a little whether I can be sure that (outside PlainTeX) 2 
> will be
> > the symbols family.
>Yes, families 0, 1, 2, and 3 are guaranteed to have the same meaning.
>The special math fontdimen parameters from the symbol and extension fonts
>are required in the fonts for families 2 and 3 for TeX to typeset math.
>See the first page of Appendix G.

Indeed, expressly. I may have asked a wrong question. TeX doesn't care 
about where cmsy or so is, it just acts on what it finds in family 2.


     Uwe L.

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