I would like to add content to some of my confluence pages from 3rd party sites (e.g. prezi.com) using the iframe macro. I would like to allow the 3rd party content to switch to fullscreen. Your iframe macro dialog does not have that option and the generated iframe html tag does not contain the allowfullscreen attribute.

Could you add the allowfullscreen attribute to the iframe html or a checkbox into the dialog of the macro, so that I can enable/disable it.