Bit of a snag here. I lost control of my fingers for a moment, hit something I shouldn't have, and now a row of menues has disappeared. I'm talking about those pulldown menus that noramlly lie atop the perspective and orthographic views. I've grown quite fond of them and would like to get them back. They're not in the UI elements, nor are they in the heads up display. I can't even locate the right reset button.
I looked for a command for that and couldn't find one either. There may be one but what you could do is delete your Preferences folder. I believe that gets you back to the basic, initial settings. If you made any specific layout changes, you'd have to re-do those. Someone else may have a better solution.