User's Manual

Location and security
Use wireless networks: Allows some applications to determine your current location via the Wifi connection.
Set (change) unlock pattern: Allows to lock your device with a password.
Require pattern: Enables/disables password locking of the device.
Use visible pattern: Enables/disables the password to be visible when being applied.
Visible passwords: Enables/disables passwords to be shown when they are typed.
Use secure credentials: Allows applications to access secure certificates.
Install from SD card: Installs encrypted certificates from an SD card.
Set password: Sets or changes the credential storage password.
Clear storage: Clears credential storage.
Applications
Unknown sources: Allows the installation of non-Android™ Market applications.
Manage applications: You can view information about all the applications installed on your device or uninstall the application.
Running services: View and control currently running services.
Development: Advanced options for software developers. Includes a screenshot setting (screen image saved to the root).
Accounts and Sync
Settings to manage data synchronization.
Device storage and USB connection
Update multimedia library: Refresh your Media library to display full content.
(Internal) Total space: Displays the total space in internal memory.
(Internal) Available space: Displays the free space available on internal memory.
(External) Total space: Displays the total space of an inserted SD card or USB connected storage device.
(External) Available space: Displays free space of an inserted SD card or USB connected storage device.
Unmount external drive: Use this option to unmount memory card before physically removing or disconnecting it.
(System Storage) Available space: Displays the available free space on the system memory.