It seems that I can still type commands but the command line is nowhere to be found.
Did you try "commandprompt" then "yes" to display.
Actually "DisplayCommandPrompt" will turn it on.
Thanks, that worked, though it's awkward to have to use the command prompt in order to show the command prompt. Is there a menu item somewhere that will cause it to display?
Options > Appearance apparently works too.
I have only been there to maximise every pixel of realestate.
The options / appearance will be remembered.
The command 'ToolbarReset' should bring it back as well as the Main/Standard toolbar groups. A restart of Rhino will be required.
McNeel & Associates