Simple question..

How does the font manager knows which sets of font files to use when
switching between languages? like for japanese,
there are many uj-*-14.phf files, how does the font manager knows to use
these filess rather than the 14 fonts files like helv14.phf files?
is it only based on the ABLANG variable??

The reason I asked is that I downloaded some slovak phf files, like
skhelv14.phf, I like the font
manager to use them rather than the regular font files, I changed the ABLANG
to sk_SK,
didn’t work.