This is the root dir for Inkscape's resources that it loads at runtime: 
icons, markers, filters, keyboard maps, etc.

attributes - 
branding   - Official visual collateral
examples   - Sharable example drawings
extensions - Plugable scripts runnable by Inkscape
filters    - Custom SVG filters loaded at runtime, under Effects > Filters
fonts      - 
gradients  - 
icons      - Program icons follwoing the freedesktop.org icon scheme.
keys       - 
markers    - 
palettes   - 
patterns   - 
screens    - 
symbols    - 
templates  - 
tutorials  - 
ui         -