You create these gestures by enabling AssistiveTouch and then tapping the Create New Gesture entry at the bottom of the screen. In the screen that appears, use up to five fingers to swipe or tap out a gesture. You can then activate one of these gestures from AssistiveTouch's Favorites menu.

This iPhone 4-- and 4S--only option setting lets you choose how incoming calls will be routed--Default (via a headset, if one is connected, or the speaker), Headset, or Speaker.

This setting, aimed at people who will use the device's accessibility features, allows you to configure what a triple-click of the Home button does. The options include Off, Toggle VoiceOver, Toggle White On Black, Toggle Zoom, Toggle AssistiveTouch, and Ask.