|Swipe three fingers from top to bottom to show/hide the keyboard.|
|Tap three fingers to show or hide the media keys.|
Using the volume control slider you can adjust your volume. You can either drag the slider or tap on speaker symbol to adjust the volume in steps.
The speaker button will mute and un-mute your computers volume.
The screen zoom feature is only available on Macs. This functionality is enabled by default on OSX 10.6 whereas in OSX 10.7 universal access has to be enabled manually for proper functionality.
The settings are available in the iPhone/iPod/iPad touch system settings. They are located below the general settings, WiFi settings,...