Windows Registry Keys

You should not have to edit the Windows Registry. If you edit the wrong stuff, Gravity might not function. In the worst case - you could screw up the computer.
 - Edit the Registry at Your Own Risk -

Versions 2.9 and Higher
Starting with Version 2.9 (all builds) all registry settings are under the following key:
HKEY_CURRENT_USER\Software\MicroPlanet\Gravity 2.9
Each Major Version (2.9, 2.10. 3.0, etc) will have its own key.

Old Versions Including Version 2.8.x
Settings are stored in *two* registry keys:
HKEY_CURRENT_USER\Software\MicroPlanet\Gravity
  - and -
HKEY_LOCAL_MACHINE\SOFTWARE\MicroPlanet
The second key is important. If you delete it, the spell checker will not work properly.