US Patent 7921360 Content-restricted editing

A system and method are disclosed to restrict editing in a tag-delimited, multi-formatted document comprising parsing the multi-formatted document, identifying a plurality of tags responsive to the parsing, generating a revised document based on the multi-formatted document, inserting one or more restriction tags into the revised document delimiting non-editable content defined by one or more of the plurality of tags, and restricting edit functions of a page editor responsive to the page editor reading the one or more restriction tags.