Changing math font in plain TeX

I was trying to change the math font used in plain TeX (as opposed to LaTeX or ConTeXt), but I didn't seem to find it documented any where, apparently it is so obvious for TeXperts to be even documented. Anyway, I figured it out and I'm documenting it here so I don't have to search it again.

Set font families 0-3 to the new font, as follows:
0: math text ("sin", "cos", numbers, etc.)
1: math italic ("x", "y", "z", etc. don't have to be italic at all e.g. Euler)
2: math symbols
3: math extensions
\textfont: normal size font
\scriptfont: font for sub/super script
\scriptscriptfont: font for subsub/supersuper script

Something like:

\textfont0 = \mathtext
\scriptfont0 = \mathsubtext
\scriptscriptfont0 = \mathsubsubtext
\textfont1 = \mathlet
\scriptfont1 = \mathsublet
\scriptscriptfont1 = \mathsubsublet
\textfont2 = \mathsym
\scriptfont2 = \mathsubsym
\scriptscriptfont2 = \mathsubsubsym
\textfont3 = \mathext
\scriptfont3 = \mathsubext
\scriptscriptfont3 = \mathsubsubext

التعليقات

علِّق

محتويات هذا الحقل سرية ولن تظهر للآخرين.
كابتشا
هذا السؤال للتأكد من أنك زائر حقيقي ولمنع السخام.
5 + 6 =
حل هذه المعادلة الرياضية البسيطة وأدخل الناتج. مثلا: إذا كان السؤال 1+3 أدخل 4.