24. A system for transforming a dynamically changing electronic document comprising: means for providing a visual representation of one or more instances of a dynamically changing electronic document to a user; means for receiving feedback from interaction by said user with said visual representation, said feedback identifying one or more portions of said visual representation, said feedback being used to generate one or more virtual tags, said virtual tags identifying features of said one or more portions of said visual representation; means for constructing one or more transformation rules using said feedback and said one or more virtual tags; and means for applying said one or more transformation rules to said one or more instances of said electronic document, a second electronic document or future versions of said one or more instances of said electronic document to extract customized content identified from said one or more virtual tags and generate a virtual page of said customized content.
24. A system for transforming a dynamically changing electronic document comprising: means for providing a visual representation of one or more instances of a dynamically changing electronic document to a user; means for receiving feedback from interaction by said user with said visual representation, said feedback identifying one or more portions of said visual representation, said feedback being used to generate one or more virtual tags, said virtual tags identifying features of said one or more portions of said visual representation; means for constructing one or more transformation rules using said feedback and said one or more virtual tags; and means for applying said one or more transformation rules to said one or more instances of said electronic document, a second electronic document or future versions of said one or more instances of said electronic document to extract customized content identified from said one or more virtual tags and generate a virtual page of said customized content. 46. The system of claim 24 comprising: means for approving said visual representation of said virtual page; or means for user disapproving said visual representation of said virtual page, wherein when said visual representation is disapproved revising said one or more virtual tags or said transformation rules to form revised virtual tags or revised transformation rules and applying said one or more revised transformation rules to said one or more instances of said electronic document, said second electronic document having a similar structure as said one or more instances of said electronic document or said future versions of said one or more instances of said electronic document.