** the command \ss, as Sans Serif, will switch to Sans Serif font
* # Give a name to the font you want to use for both with [[Command/definefontfamily]] *#* <texcode>\definefontfamily[MyFontFamilyName][rm][refcode to the serif font]</texcode>*#* <texcode>\definefontfamily[MyFontFamilyName][ss][refcode to the sans serif font]</texcode>