| -helix 25.3,67.1,2 | Symmetrize: Helical rise and angle, and dyad axis indicated by 2. |
| (default 10 angstrom, 45 degrees, no dyad axis). |
| -super 25.3,67.1,22,15.5 | Superhelix: Helical rise and angle, and offset in xy plane. |
| -normalize | Normalize symmetrized output, use for maps close to symmetry (default not). |
| -background | Calculate new background values. |
| -project 20 | Generate projections with this angular step size (over 360 degrees). |
| -find | 5,8.5,0.5,10,22.4,1.5 Find helical parameters with this rise and angle |
| (each: start, end, increment). |
| -rescale -0.1,5.2 | Rescale data to average and standard deviation. |
| |