mous press determin port user drag mous press event sent mode select inherit doc mous press mous event consum editor ce global cur editor fig mous ce hit mous mous ce hit mous consum mous fig classifi role consum sourc fig classifi role fig classifi role mous start port sourc fig classifi role deep hit port start port consum start port fig sourc fig classifi role port fig start port start point snap pt point snap pt snap pt set locat start port fig fig classifi role role width start port fig editor snap snap pt anchor snap pt anchor snap pt item creat item anchor anchor consum set cursor cursor predefin cursor cursor crosshair cursor 