Topic font-sel
font selection schemes
Access bold symbols in maths mode
Changing fonts, sizes and encodings in Plain TeX
Font selection for plain TeX
Advanced font selection in X∃LaTeX and LuaLaTeX
Bind fonts to specific unicode blocks
Access italic computer modern sans in LaTeX 2.09
Make math bold or italic according to context
Extensions to the LaTeX NFSS
Macros for managing large font collections
Changing fonts, sizes and encodings in Plain TeX (obsolete version)
Damian Cugley's document tools
Variable sized fonts in Plain TeX
Font selection for Plain TeX
Set the font size relative to the current font size
Rescale fonts to arbitrary sizes
Scale text to given width
Scale text to make it fit a given width
Slanted emphasis in LaTeX 2.09
Slanted emphasis in LaTeX
Choose an "adjacent" size in LaTeX
Select a balanced set of fonts
Change font size in Plain TeX