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. 39. The system of claim 24 wherein a first said one or more virtual tags is a portion of said one or more instances of said electronic document to be cut and a second one of said one or more virtual tags is a portion of said electronic document to be pasted and said one or more transformation rules being constructed from said first virtual tag and said second virtual tag for determining a cut and paste operation.