9. The annotation handling computing system of claim 8 , wherein the parsed output result comprises a hierarchical tree that organizes the elements of the base document into different types of nodes.
9. The annotation handling computing system of claim 8 , wherein the parsed output result comprises a hierarchical tree that organizes the elements of the base document into different types of nodes. 10. The annotation handling computing system of claim 9 , wherein the different types include one or more of: a drawing object node; a paragraph node; a line node; a word node; or a stroke node.