Customize Keyboard view

Virtual keyboard looks different in different using.
How can I manage the keyboard view?

Write Done on the return key, show the buttons I really want.
I am interesting about standard part of keyboard,
not the great additional line in Codea.

I don’t believe that it is possible to modify the standard keyboard. However, it’s not hard to simulate a keyboard, whereupon you can display what you like on the keys.

Here
http://developer.apple.com/library/ios/ipad/#documentation/UIKit/Reference/UITextInputTraits_Protocol/Reference/UITextInputTraits.html#//apple_ref/occ/intf/UITextInputTraits

they describe KeyboardType constans

but how can I use that in Codea?