| -lattice 5,9 | Lattice parameters (units along u and v vectors). |
| -normalize | Normalize symmetrized output, use for maps close to symmetry (default not). |
| -background | Calculate new background values. |
| -rescale -0.1,5.2 | Rescale data to average and standard deviation. |
| -verbose 1 | Verbosity of output. |
| -datatype u | Force writing of a new data type. |
| -sampling 1.5,1.5,1.5 | Sampling (A/pixel; a single value can be given). |
| -origin 110,50,44 | Origin for tube (default 0,0,0 or from image). |
| -constant 95 | Lattice constant: distance between units in angstrom (default 1). |
| -zlimits 8,47 | Range of slices along the helical axis to use (default 0,inf). |
| -radius 22 | Radial limit for symmetrization in pixels (default from image). |