Is there any system-wide configuration file that can be used to store font
information so that all the environments (KDE, GNOME, Xfce, ...) behave
consistent with regard to font issues? For example, what is the
configuration file that gnome-font-properties uses? What is the equivalent
of that file in KDE or Xfce?
By using gnome-font-properties, I changed all the fonts to "Roya" font and
GNOME properly modified and used that font instead of all the other fonts;
but KDE didn't; it still uses another font for displaying Persian text
("Homa" font).