Stores the current approximate arc length for revision clouds.
| Type: | Real |
| Saved in: | Registry |
| Initial value: | 0.0000 |
When REVCLOUDARCVARIANCE is set to 1, the stored value is used to calculate the minimum and maximum arc lengths for revision clouds.
If REVCLOUDARCVARIANCE is set to 0, the stored value is used as the actual arc length for revision clouds.