How about click the first feature, and shift-click the last, right click and choose unhide? This is a Windows application, so it should work (and I think I have done it before). It might depend on the state of the last feature or the majority.......... Tweak with it a bit.
I was - and he did. So at least I didn't get coal.....
OK, OK, It's a reference to my holiday sig. "Be naughty - Save Santa a trip..."