Changes

=====Trackpad as Mouse=====

=====Trackpad as Mouse=====

The use of the finger on the central trackpad area serves as the primary input device for pointing.  Though external [[USB peripherals|USB mice]] will work seamlessly with the laptops, their availability will be limited, and activity designers should not expect that children will have access to them.  This means that a certain lack of precision can be expected when moving the cursor about the screen, and activities should not require extremely precise motion.  Excessively small controls should also be avoided for similar reasons; details on how to design interface elements reside in the [[OLPC Human Interface Guidelines/The Sugar Interface/Controls|Controls]] section.

The use of the finger on the central trackpad area serves as the primary input device for pointing.  Though external [[USB peripherals|USB mice]] will work seamlessly with the laptops, their availability will be limited, and activity designers should not expect that children will have access to them.  This means that a certain lack of precision can be expected when moving the cursor about the screen, and activities should not require extremely precise motion.  Excessively small controls should also be avoided for similar reasons; details on how to design interface elements reside in the [[OLPC Human Interface Guidelines/The Sugar Interface/Controls|Controls]] section.

In addition, the laptops have two buttons positioned beneath the trackpad for input. The left button is the primary button with which elements of the interface are selected, pressed, or activated. The right button has secondary functionality.  Typically, the right mouse button invokes contextual menus, the content of which pertains directly to the interface element the mouse is positioned over.

In addition, the laptops have two buttons positioned beneath the trackpad for input. The left button is the primary button with which elements of the interface are selected, pressed, or activated. The right button has secondary functionality.  Typically, the right mouse button invokes contextual menus, the content of which pertains directly to the interface element the mouse is positioned over.