Add another attribute, datb, to the model for a page; While editing pages for which this attribute was not defined, use getattr() but eventually get rid of that kind of language; Allow users to edit a second text box and to save what they type or paste in there and show it again the next time they edit that same page (i.e. save the contents of textarea 'bodz' into the 'datb' attribute of the 'Page').
Add an <iframe> to the view template and use it to display the result of going to the url that is stored in the 'bodz' property of the 'Page'--this is the src for the iframe.