| Parameter Name | Units | Type | Default | Description |
| MX | double | 1 | factor for x coordinates | |
| MXP | double | 1 | factor for x' coordinates | |
| MY | double | 1 | factor for y coordinates | |
| MYP | double | 1 | factor for y' coordinates | |
| MS | double | 1 | factor for s coordinates | |
| MDP | double | 1 | factor for (p-pCentral)/pCentral |