Full Screen with Microsoft's Mac OS X RDP client?

I have a MacBook Air and I'm using Microsoft's RDP client (Remote Cesktop client) for OS X to remote in to Windows machines. Is there any way to get the client to use the full screen? There seem to be no options for this in the menu bar on on the dock icon. If not, are there any alternative RDP clients for Mac OSX that will allow me to go full screen? (I'm not really a VNC fan, in any of its forms) It seems a shame to waste my screen real estate, especially since I am on only a 13" screen.