| Name | Value | Description |
| kHeightDatumInner | 75522 | Use F1 key to display help topic. |
| kHeightDatumInnerOrtho | 75525 | Use F1 key to display help topic. |
| kHeightDatumOuter | 75521 | Use F1 key to display help topic. |
| kHeightDatumOuterOrtho | 75524 | Use F1 key to display help topic. |
| kHeightDatumTangent | 75523 | Use F1 key to display help topic. |