Type definitions required by the library.
| Name | Description |
|---|---|
| Normalized real number | |
| Gear ...,-2,-1,0,1,2,... = 2nd rear, 1st rear, neutral, 1st, 2nd forward, etc | |
| Type, constants and menu choices for gear mode, as temporary solution until enumerations are available | |
| Type, constants and menu choices for ignition setting, as temporary solution until enumerations are available |