Poser has a ton of features, but a lot aren't obvious. :) There's also a keyboard shortcut for camera restore, as well as light restore, figure restore. Also Ctrl Z which is the standard undo command for most windows programs works in Poser. I've used it' a ton :)

Edited to add

The Ctrl Z funtion remembers up to a certain number of steps. If you created a scene and made a series of mistakes you can undo many of them (in sequence). There is also a redo shortcut key (it's under the edit menu, the actual key combination escapes me at the moment).

The dust settled, thinking "what a fine home, at least for now" not realizing that doom would soon be coming in the form of a vacuum cleaner.