Selection Type Editor
This submenu holds the white selections circles, diamonds,..that appear below the unit(s)
The selection types are stored under Textures\Selection\xxxx in .tga format. I dont really see the need to change these, however, if a new unit, lets say an artillery unit is added that is different from the already existing one's it may be good to create a new .tga for this.
This works toghether with the various ~.md file's.
For example
ArtPus4L.MD uses the string
SELTYPE RoundArtL 1 0.8
as defined above where the
1 is standartscale and
0.8 rotationspeed