Smartbox Grid Pad Manual page 56

Improving your calibration
Once you have completed your first calibration, you can use the
Improve calibration option to focus on any problem areas. This is
a good opportunity to check the position of the device, and your
surroundings for any potential interference such as reflections or
strong daylight.
Calibrating from a grid set
You can start a calibration directly from a grid set with the
Calibration command. Some grid sets have this option already
in the Settings grid. You can also use the Improve calibration
command to focus on any difficult areas.
Configuring your eye gaze options
In Grid 3 you can customise how you want your eye gaze access
to behave. There are camera specific options listed under
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