click on the object, and in the menu on the right, drop "Transform," and edit the "rotation" field
I'm pretty sure each number stands for rotation on a specific axis, but I have no idea exactly how to edit it properly
I would suggest that you just forget around with it until you figure out how to use it
it's just rotation, so I don't think loving around with it puts you in any risk of breaking anything
You can do it in the Transform drop-menu, but I could have sworn there was an easier way...
that's what I was thinking too. hm