Long presses where a physical keyboard has the other half of the key.
On the symbols page each of !@#$%^&*() holds its digit, ; holds a comma
and : a full stop; on the keypad page + holds *, - holds /, . holds a
comma and e holds an underscore. Escape now sits beside the space bar
on the symbols page.

The cell beside space on the keypad page was a way back to the letters,
which the layout key beside it already does; it now finishes each mode
instead - the keypad's zero, the tenth function key, forward delete.
On the menu page that same cell opens the code-point entry.

The notepad's note screen grew a second row of links: Cp, Cut, Paste,
Del, Un, Re, on the selection or on the whole field. Undo is the
notepad's own history, so it behaves the same on every Android it runs
on rather than only from API 23.
