|     Checks to see if the @target is affected by an affect object of the@skill. The @skill may either be the name of the skill ("poison") or it
 may be the ID of the skill. If the affect exists then 1 is returned;
 otherwise 0 is returned. Note that this function does not look for
 traditional internal affects that are not implemented as affect objects.
 
 Example:
 --------------------------------------------------------------------------
 
 if( !%skillAffectItemExists( @target, "disease" ) )
 {
 cast disease @target
 }
 endif
 |