%% This is part of the OpTeX project, see http://petr.olsak.net/optex \_famdecl [XCharter] \XCharter {An extension of Bitstream Charter} {\caps \slant} {\rm \bf \it \bi} {XCharter} {[XCharter-Roman]} {\_def\_fontnamegen {[XCharter-\_currV]:script=latn;\_capsV\_fontfeatures}} \_wlog{\_detokenize{% Modifiers:^^J \caps ...... caps & small caps^^J \slant ..... slanted variants used in \it, \bi^^J }} \_moddef \resetmod {\_fsetV caps={} \_fvars Roman Bold Italic BoldItalic } \_moddef \slant {\_fvars Roman Bold Slanted BoldSlanted } \_moddef \caps {\_fsetV caps=+smcp;\_ffonum; } \_initfontfamily % new font family must be initialized \loadmath{[XCharter-Math]} \loadboldmath{[XCharter-Math-Bold]} \to {[XCharter-Math]} \_endcode See the file `f-heros.opm` for information about principles of such font-macro-files.