`tdbcols`
		create
		findcol
		findcolindex
		colbyname
		colsbyname
		colsindexbyname

`tpersistentarrayprop`
		create
		destroy
		itemdestroyed
		assign
		propkind
		displayname
		add
		indexof
		getitemclasstype

`tarrayprop`
		propkind
		beginupdate
		endupdate
		clear
		insertempty
		insertdefault
		delete
		move
		order
		reorder
		link