On top of the various function keys available on this keyboard a smaller Samsung keyboard also manages to have back, browser, email, voice search, language and app library keys. So the design could have been better.
They're convenient yes but not essential, doesn't detract from the usability of the keyboard. From the pictures it seems to have: task switching, screen brightness, media keys and power(assume this powers the tablet off?), I'd say this is adequate enough for it's purpose.
If it did have extra function keys it would be really nice if they were user assignable, just out of interest can you re-assign those keys on the Samsung keyboard?