Slitherine

I was just playing Operation Goodwood and suddenly it is no longer displaying cover and terrain type at the top of the screen when I select a space for moving. Also, my supports (Morale, Replacements, Artillery ) have disappeared from the right side of the screen. It doesn't even show the 'end turn' control.
Anyone know why this might have happened?

Ah - I looked up 'Battle Screen' in the manual and saw 'Ctrl-H' to hide interface. So I did that, and the unit icons at the bottom disappeared. Then when i hit Ctrl-H again, they came back, along with the other things which had previously disappeared. Odd, but a solution!