Generic filters are a catch-all for filters which can't be placed elsewhere.
This category describes the following filters:
Odjeljak 9.2, “Convolution Matrix”
Odjeljak 9.3, “Distance Map”
Odjeljak 9.4, “GEGL Operation”
Odjeljak 9.5, “GEGL graph”
Odjeljak 9.6, “Normal Map”
Odjeljak 9.7, “Dilate”
Odjeljak 9.8, “Erode”
