How many times must this be said? This is
not the same thing as the F-keys on normal Apple keyboards. The F5 and F6 keys are not blank, they are F5 and F6! They exist for a reason!
The blank key on the ipad keyboard is truly blank. It has no apparent function whatsoever. Considering Apple is a company of discriminating detail, it's pretty safe to say that they did this for a reason. Most likely, the shipping version of the keyboard will have "something" printed on that key. This thread is about what that function might be.
So, can we stop talking about the desktop keyboards now and stay on topic!
...sorry