| Parameter Name | Units | Type | Default | Description | 
| X | long | 1 | remove correlations in x? | |
| XP | long | 1 | remove correlations in x'? | |
| Y | long | 1 | remove correlations in y? | |
| YP | long | 1 | remove correlations in y'? | |
| WITH | long | 6 | coordinate to remove correlations with (1,2,3,4,5,6)=(x,x',y,y',s,dP/Po) | |
| ONCE_ONLY | long | 0 | 
compute correction only for first beam, apply to all? |