| Motor command data | |
| Robot information | |
| A 4-tuple representing a color in RGBA space | |
| Information about a contact point | |
| Information about contacts | |
| Sensor data | |
| Information about a joint. A joint is a component of a model | |
| Information about a link. A link is a component of a model | |
| Information about a model | |
| A quaternion | |
| Simulation information | |
| A translation and orientation constructed of a hxVector3 and hxQuaternion | |
| A three-tuple vector | |
| A representation of time |