jimoblak - I certainly HAD explored every item under the view menu, without any joy.
jmgalvin - THANK YOU!!! I think one of the problems is that for some reason my toolbar runs horizontally, so the right hand end is often off-screen as I try and get it out of the way. I have tried to position it vertically by dragging it to the edges of the screen, but it stays vertical. Any other little magic tip?