[dev-context] Font switching in XeTeX

[Mojca Miklavec]

Hello Hans and Adam,

Which are the high-level font switching commands for XeTeX?

Documentation in font-ini states that something like
\definedfont["cmtt10" at 40pt] should work, but if I try to play with
\definedfont["Latin Modern Roman" at 40pt] I get the message that TFM
files for "Latin Modern Roman" do not exist. \font\A="Latin Modern
Roman" at 40pt works OK.

I have some problems with the default Type1 lmr font - it doesn't know
that there are any "ccarons" present in the font (with OpenType lmr it
works OK), but I have to inspect that a bit anyway. There should be a
way to "preload" the lm fonts so that they would work OK with
diacritical marks.

Mojca