fontch – Changing fonts, sizes and encodings in Plain TeX

The fontch macros al­low the user to change font size and fam­ily any­where in a plain TeX doc­u­ment. Sizes of 8, 10, 12, 14, 20 and 24 points are avail­able. A sans serif fam­ily (\sf) is de­fined in ad­di­tion to the fam­i­lies al­ready de­fined in plain TeX. Op­tional sup­port for Latin Modern T1 and TS1 fonts is given. There are macros for non-lat­in1 let­ters and for most TS1 sym­bols. Math mode al­ways uses CM fonts.
A com­mand for pro­duc­ing dou­bled-spaced doc­u­ments is also pro­vided.
The present ver­sion of the pack­age is de­signed to deal with the lat­est re­lease of the Latin Modern fonts ver­sion 1.106. Un­for­tu­nately, it can no longer sup­port ear­lier ver­sions of the fonts, so an ob­so­lete ver­sion of the pack­age is re­tained for users who don't yet have ac­cess to the lat­est ver­sion of the fonts.