You can send a control-C by pressing the "bullet" key (First press ".?123", then "#+=", then the circle on the middle right), then press the C key. This can be useful when you want to escape out of a long running program such as ping. Control-C can also be accessed with a short Up-Right and Control is a short Down-Right swipe, after which the cursor will turn highlight red, from here press any character q, x, c, A to complete or the delete button to exit Control mode.
|Short||up/down/left/right||arrow keys (respectively)|
|Long||Up||None (functions as up-arrow)|
|Two Finger||Down||Hide Keyboard|
Terminal comes with four terminal windows. Tap on the battery icon to go right, tap directally on the time to go left, and tap on the carrier name (AT&T or iPod) to crash Terminal (or do a really quick killall Terminal depending on how you look at it).