It just goes to show you!  When you feel you know and understand a product pretty well, some new nook or cranny appears, allowing you into previously unexplored territories.

I never had explored this facet of IE, but Nikhil Kothari identifies that you can create your own stylesheets and apply them to Internet Explorer in general.  Specifically, he points out simply enlarging (zooming) the contents of the browser by creating a simple stylesheet containing nothing but body { zoom: xxx% }.  This is fantastic - especially for presentations!

One thing of note, because I had never looked into the zoom attribute before:  not only does it enlarge what the browser is presenting (text, images), but also its scrollbars.  Likewise, it does not zoom contents for which HTML (for one reason or another in IE) has no control over, such as your caret or combo boxes.

Additionally, this stylesheet, should you choose to apply it, affects ALL Internet Explorer-based applications on your system universally (Outlook, Web Browser controls, etc), so choose your styles with care.