CGraphItem

	ClassId	Control type
	ClientTag$	Free text field available to programmers. Intended for use in the browser client. Accessible client side.
	Explode	Whether a graph item is show in an emphasized state
	Index	Index value of graph item
	Set	Set value of graph item
	Sym	Returns a pointer value to the control
	Tag$	Tag of a graph item
	TagPtr	Handle field available to programmers
	Value	Data value of a graph item