It means when there is a Pink pathing, The unit gets the abillity
What is a pathing map?
A pathing map determines the pathing for units around a certain object or area.
Almost all units, doodads, and models have a pathing map. This defines how the area around the object behaves. For example, a 'pathing blocker' blocks units from walking or flying in an area. Buildings also have pathing maps to prevent units from walking on them or building to close to them.
You may recognize this basic pathing blocker doodad from the Doodad Pallet.
A pathing blocker uses a special pathing map.
How are pathing maps made?
Pathing maps are simple. They are a small TGA file made up of some basic colors.
Pathing maps are made from TGA files.
Each color represents some type of pathing behavior.
Each pixel in the TGA file represents 32 grid units in the editor.
Below is a list of the different colors a pathing map can use, and what effect that color has. Knowing all this, you could make areas where only flying units could enter. Or, the opposite, keeping all flyers out.
I created a massive blocker using blue pixels, to place on the grass in my TD. This keeps players from unfairly building towers in areas that are not used or decoration.
Color Buildable Walkable Flyable Red Green Blue
White no build no walk no fly 255 255 255
Red build ok no walk fly ok 255 0 0
Yellow build ok no walk no fly 255 255 0
Green build ok walk ok no fly 0 255 0
Cyan no build walk ok no fly 0 255 255
Blue no build walk ok fly ok 0 0 255
Magenta no build no walk fly ok 255 0 255
Black build ok walk ok fly ok 0 0 0