`tgridint64datalist`
pl	ro	facultative

`tint64datalist`
		asarray
		items

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

`tlinkedpersistent`

`tnullinterfacedpersistent`

`tvirtualpersistent`