old: Deprecated and legacy XResources. Mostly for programs no longer in use.
fix: Broken XResources that still contain interesting information.
colors: Directory containing color schemes, to be #include’d in Look
xpms: XPM images, for use with Look.
Look: System-wide "look" resources, such as colors, fonts, shadows, etc
Feel: System-wide "feel" resources, such as bindings, refresh rates, etc
MOTIF: MOTIF-specific resources.
Athena: Athena-specific resources. Mostly to keep Athena looking like MOTIF.
$PROGNAME: Program-specific resources, e.g XCalc, XTerm, and so on.