`tgridpointerdatalist`
pl	ro	facultative

`tpointerdatalist`
		items
		asarray

`tdatalist`
	ro	size
	ro	state
		count
		capacity
		onchange
		onitemchange
		maxcount
		sorted
		checkeditem
		facultative

`tlinkedpersistent`

`tnullinterfacedpersistent`

`tvirtualpersistent`