User:Jeblad/wb

There are two working sets, one global for cached items and one for matched items. The matched items are local for the instance.

The type is a property if using the form "Pnum", an item if using the form "Pnum"
 * child : Matches any node one step forward from the current matched nodes.
 * item : Matches current node that is an item or any node found on backward traversal. Noo...
 * claim : This process the existing statements and filter on the given property id. Could be used as  or   to do an implicit select of matched item.
 * qualifier : This dives into the qualifiers and filter on the given property id. Could be used as  or   to do an implicit select of matched item
 * reference :
 * back : Backing up to a given type.