JS-ELEMENT

Characters, Objs, Rooms, and Auras are all derivatives of Elements and implement all of the following methods:

hasBehavior( n )     Returns true if this has the specified behavior.
behaviorPercentFor( n )  Returns the trigger percent for the specified
                     behavior.  If the behavior is not present, this returns
                     0.
addAura(n,d,a)       Adds the specified aura to this aura.  'n' is
                     the name of the aura.  'd' is the duration, either a
                     a number of mud hours or 'permanent'.  'a' is a list
                     of arguments for the aura.  For example:
                     obj.addAura( 'stat', 'permanent', 'hitroll', 2, 'damroll', 3 )
                     adds a permanent aura to the obj which will increase its
                     "hitroll" bonus by 2 and its "damroll" bonus by 3.
removeAura(n)        Removes the specified aura from this aura.
addAuraCat(p,n,d,a)  This performs like addAura() except that all of
                     the aura category stacking rules will be applied.
                     p should be set to whatever is applying the aura
                     to the target.  This method returns true if the aura
                     was successfully added.
removeAuraCat(p,n,l) This performs like removeAura() except that it
                     removes a category of auras.  p should be set
                     to whatever is removing the aura from the target.
                     l is the level at which auras should be removed
                     at ... only auras at l level or lower will be
                     removed.