The fonts used for each selection in the Font dialog box are specified in the /usr/dt/app-defaults/Dtstyle resource file. Up to seven sizes can be specified.
NumFonts
—number of font
sizes in the Font dialog box
SystemFont[1-7]
—up to seven resources assigning a specific
font to a Font dialog box selection for SystemFont
UserFont[1-7]
—up to seven resources assigning a specific
font to a Font dialog box selection for UserFont
The default fonts for these resources have been chosen for readability on various displays. If you want a specific font for an application, set the font with an application font resource rather than changing these desktop fonts.
For more information about application fonts, see the DtStdAppFontNames(5) and DtStdInterfaceFontNames(5) man pages.