iPhone development short cuts

Reorienting the screen. With the Hello World application running, you can
reorient the Simulator using Command-Left arrow and Command-Right arrow.
n Going home. Tap the Home button (Command-Shift-H) to leave the application
and return to the SpringBoard home screen.
n Locking the “phone.” Hardware, Lock (Command-L) simulates locking the
phone.
n Viewing the console. In Xcode, choose Run, Console (Command-Shift-R) to
view the Xcode console window.This window is where your printf, NSLog, and
CFShow messages are sent by default. In the unlikely case where NSLog messages
do not appear, use the Xcode organizer (Window, Organizer, Console) or open
/Applications/Utilities/Console to view NSLog messages instead.
n Running Instruments. Use Run, Start with Performance Tool to select an
Instruments template (such as Object Allocations or CPU Sampler) to use with the
Simulator. Instruments monitors memory and CPU use as your application runs.