This is used in scripts to find the mortal level of a player, or to adjust it.
%actor.level% - return the level of actor
%actor.level(<val>)% - set the actor to mortal level 'val' (range 1-30)
Note that the level of a player should never be adjusted in a script unless you
have a very good reason for it. This simply changes the mortal level and does
not update any other stats (like max hp or exp).
See also:: CHAR-VAR