These immutable font helpers configure the Windows DirectWrite text backend. The legacy Uniscribe backend also supports paragraph direction and uniform tab intervals. OpenType feature, locale, and color-font options require DirectWrite on Windows. Other text backends currently ignore these options. Options survive UI font derivation; omitted options inherit from the base font.
font-with-direction ( font direction/f -- font' )
font-with-tab-width ( font width/f -- font' )
font-with-features ( font assoc -- font' )
font-with-locale ( font locale -- font' )
font-with-color-fonts ( font ? -- font' )