Input Devices Preferences

Pointer

Tablet Model field
Displays the model of the currently installed tablet. Non-editable.
Pointer Reset button
Returns all pointer preferences to their default values. Available on Linux systems.
Threshold Test button
Assesses the sensitivity of the pen interactively. Press the pen on the button and a sliding grey bar in the message bar displays the response to the amount of pressure applied. Available on Linux systems.
Pressure Threshold field
Displays the amount of pressure that you want to apply when using the pen. Use a higher value to decrease the sensitivity of the pen (more pressure required). Available on Linux systems. Editable.
Use Mouse Cursors button
When using a tablet, enable to use mouse cursors instead of tablet cursors.
Trackball Pressure button
Enable to allow the trackballs to respond to changes in the pressure applied when using a stylus.

Tablet Margins (available on Linux systems).

Proportional Margins button
Enable to change the four margin controls proportionally.
Top Margin Control field
Displays a percentage value to adjust the top boundary of the active area on the tablet. Editable.
Bottom Margin Control field
Displays a percentage value to adjust the bottom boundary of the active area on the tablet. Editable.
Left Margin Control field
Displays a percentage value to adjust the left boundary of the active area on the tablet. Editable.
Right Margin Control field
Displays a percentage value to adjust the right boundary of the active area on the tablet. Editable.

Tablet Stylus Buttons

Use OS Settings button
Enable to use the Wacom stylus shortcuts mapped in the System Preferences of the operating system. Disable to use the buttons to access shortcuts mapped in the Keyboard Shortcut editor. Available on Mac systems.