This is official answer from Zagg about kbd features:
In regards to your email, thank you for your purchase of the ZAGGfolio! I would like to inform you that this product will work just like any other Bluetooth keyboard in a sense that it is up to the iPad 2 to do these functions. The keyboard itself would be no different in controlling the iPad 2 as the on-screen keyboard. That being said, here are some of the shortcuts:
Home - Brings you to the iPad 2 home screen
Search - Brings up the iPad 2 search screen
Slideshow - Starts playing slideshow of saved pictures
Virtual keyboard - Allows you to hide or show iPad 2 on-screen keyboard
Lock - makes the iPad 2 screen go dark and come back when pressed again
International Keyboard - Toggles between international keyboards
Other function keys: Cut, Copy, Paste, Undo, Redo
Music function keys: Previous track, Play/Pause, Next track, Mute, Volume down, Volume up
Copy: Command C
Cut: Command X
Paste: Command V
Undo: Command Z
End: Command right arrow
Beginning: Command Left Arrow
Page UP: Command Up Arrow
Page Down: Command Down Arrow
Select All: Command A
Select Left: Shift Left
Select Right: Shift Right
Select Down: Shift Down
Select Up: Shift Up