| Abbreviation | Description |
| API | Application Programming Interface. |
| OS | Operating System |
Definition | Description |
| Accessory | A peripheral that is connected to the device. |
| Accessory capability | A feature or a quality that an accessory has, for example stereo audio capability means that the accessory has capability for handling stereo audio. |
| Accessory type | Accessory that is defined with different features. For example a mono headset is an accessory that has headset capability and mono audio capability. |
| Capability value | A value that the accessory capability can have. |