Label name conventions?

This is just a proposal, if you have ideas feel free to edit/comment 

USE_HOVER, USE_VTOL

AIs and other scripts can't see the map, so it would be useful if you could give them a hint as to what propulsion types will work best on your map.

An alternate approach has been suggested: propulsionCanReach()

VTOL_PATROL_X

AREA object where VTOLs should patrol (between x1,y1 and x2,y2).

LAND_PATROL_X

Similar to above, but for land units.

SENSOR_X

AREA or POSITION object indicating strategic location for a sensor.

INDIRECT_X

AREA or POSITION object indicating good place to put artillery and other indirect ranged weapons.

WALL_X

AREA object indicating to build walls within the contained tiles (if either height or width == 1) or build walls in a line between x1,y1 and x2,y2.

CHOKE_X

AREA or POSITION object indicating a choke point.

RALLY_X

AREA or POSITION object indicating a good place to rally troops before attacking an enemy base. For example, this might be on some mountain path that otherwise the AI might completely ignore.