Edit ACTION-1270: Create new descriptive example tables for insert and delete using one set of instance data. In general, nodeset is used when you want to pick one of the children of a node and insert before or after that node, and context is used when you want to append or prepend a child inside a node.: http://lists.w3.org/Archives/Public/public-forms/2007Jun/att-0041/20070615.html#ACTION7