internal-set-alternative-font-family-alist
internal-set-alternative-font-family-alist is a built-in function in `C source code
'.
(internal-set-alternative-font-family-alist ALIST)
Define alternative font families to try in face font selection.
ALIST is an alist of (FAMILY ALTERNATIVE1 ALTERNATIVE2 ...) entries.
Each ALTERNATIVE is tried in order if no fonts of font family FAMILY can
be found. Value is ALIST.