How to hide the ribbon

Ribbon

Starting with 3ds Max 2010 I believe, they introduced the Graphite Modeling Tools ribbon. It is a large ribbon with lots of buttons on it, replacing the Main Toolbar. Depending on what object you have selected, and what modifiers on the object, the ribbon's icons change. I believe the idea was to offer commonly used tools in a quick to get to place. However, it is rather CPU intensive, and wastes valuable screen real estate.

How to disable:
Go to Customize -> Show UI -> Show Ribbon.