| Base | The base class for all drawable entities |
| Blob | The blobs of color in a Region |
| CentLine | CentLine's are strings of pixels that could be parts of actual lines |
| Line | Lines are creases, stems, cuts, etc. They are made from CentLines |
| PiXCam | PiXCam is the class that describes the camera(s) |
| PiXFrame | The camera frame |
| Region | The largest of the Region, Blob, and Spot objects |
| Spot | The small objects in a Blob |
1.5.5