Message Box is hidden?

[unmerged(13892)]

So I'm deep into a game, and my message box disappears (the one at the bottom of the screen providing play by play.)

First time I've seen that. How do I get it back? Did I hit some key by accident?

I'm on a mac, if that matters.

 

[unmerged(13892)]

Nevermind, found the little arrow. Was hard to see!