Thes are Font Types and Classes removed from the example RTF file. I think
that any TRUETYPE font name can go in, and any valid class (whether the font
belongs there or not).  Try different ones if not.

froman Tms Rmn
fdecor Symbol
fswiss Helv
fmodern pica
fmodern Courier
fmodern elite
fmodern prestige
fmodern lettergothic
fmodern gothicPS
fmodern cubicPS
fmodern lineprinter
fswiss Helvetica
fmodern avantegarde
fmodern spartan
fmodern metro
fmodern presentation
fmodern APL
fmodern OCRA
fmodern OCRB
froman boldPS
froman emperorPS
froman madaleine
froman zapf humanist
froman classic
froman roman f
froman roman g
froman roman h
froman timesroman
froman century
froman palantino
froman souvenir
froman garamond
froman caledonia
froman bodini
froman university
fscript Script
fscript scriptPS
fscript script c
fscript script d
fscript commercial script
fscript park avenue
fscript coronet
fscript script h
fscript greek
froman kana
froman hebrew
froman roman s
froman russian
froman roman u
froman roman v
froman roman w
fdecor narrator
fdecor emphasis
fdecor zapf chancery
fdecor decor d
fdecor old english
fdecor decor f
fdecor decor g
fdecor cooper black
fnil linedraw
fnil math7
fnil math8
fnil bar3of9
fnil EAN
fnil pcline
fnil tech h
fswiss Helvetica-Narrow
fmodern Modern
froman Roman
