Pressing ALT on certain desktops brings up black boxes?

[Thunder-]

They're little black boxes that say 1 2 3 4 5 F H P N O V

Is there a way to make it STOP doing this? I end up doing functions I don't intend to do.

[Patrick]

Office 2013 ribbon access keys?

[Thunder-]

Wow. Thanks Patrick. I had no idea that was a Microsoft Office "feature." Wish there was a way to disable it or remap it to something other than Alt.