| Bit No. | Value | Meaning |
|---|---|---|
| 1 |
0 |
North Pole is on the projection
plane |
| 1 |
South Pole is on the projection plane | |
| 2 |
0 |
Only one projection center is
used |
| 1 |
Projection is bi-polar and
symmetric |
|
| 3-8 |
Reserved |