1. A method of automatically invoking a program or system function on a computer system comprising the steps of: defining at least one auto-trigger rule correlating a highlighting event to one or more programs or systems functions; generating a highlighting event upon completion of highlighting one or more of the information items by a user on a computer display; searching said auto-trigger rules for a rule which correlates to said highlighting event; and upon finding a correlating rule, invoking one or more programs or system functions according to said found rule.