Yep it could use some documentation and renaming. Regarding the dedicated namespace, why not. I need some hooks on the iframes to make this work and I just wanted to make it small : 

    <iframe src="templates/drawing-tools.html" class="_ctl" onload="_ctl(event)"></iframe>

That being said I can probably drop the css class for something more meaningful like a data-attribute. I'll come up with something more verbose.