The keyboard keys that have multi-functions if you hold them down are:
QWERTYUIOP - for the numbers
Many other chars/symbols available using these:
E, Y, U, I, O, A, S, N, C,
If you switch to the characters (tap the 123!? then o+= ) you get the alternate set and then hold many of these down to get other chars:
+, =, ,pi symbol, black dot (lets you get the card suits), ^, <, >
enjoy
the problem will be remembering which key does what!
