| Viewport Names | VP | The list of viewports | Text |
| Active Viewport Index | I | The index of the currently active viewport | Integer |
| Viewport Bounds | B | A rectangle for each viewport | Rectangle |
| Viewport Display Mode | DM | The english name of the display mode for each viewport | Text |
| Camera Location | CL | The location of the camera in each viewport | Point |
| Camera Target | CT | The location of the camera target in each viewport | Point |
| Camera Plane | CP | The camera plane for each viewport | Plane |
| Camera Lens Length | CLL | The 35mm lens length of the camera in each viewport | Number |
| Camera Projection | CPr | True if the camera is a perspective projection | Boolean |
| Camera Up | CU | The up vector for the camera in each viewport | Vector |