2. The computing system of claim 1 , the page further comprising: an inclusion reference specifying inclusion in the page of code for extracting the identified first page element in response to activation of the second extraction control.
2. The computing system of claim 1 , the page further comprising: an inclusion reference specifying inclusion in the page of code for extracting the identified first page element in response to activation of the second extraction control. 3. The computing system of claim 2 , wherein the page includes information specifying a hierarchical organization of at least a portion of the page elements, and wherein the information explicitly identifying one or more of the page elements as being an object of the second extraction control comprises information referencing a page element of the hierarchical organization, wherein the identified elements are two or more elements contained by a subtree defined by the referenced page element.