The unit with the ability.
The four digit rawcode representation of the ability.
IncUnitAbilityLevel can increase an abilities level to maxlevel+1.
On maxlevel+1 all ability fields are 0.
See http://www.wc3c.net/showthread.php?p=1029039#post1029039
and http://www.hiveworkshop.com/forums/lab-715/silenceex-everything-you-dont-know-about-silence-274351/.
Generated using TypeDoc
Increases the level of a unit's ability by 1.
Returns the new ability level.