Symmetry relaxation with helical symmetry support

Hi,

Would it be possible to add support for helical symmetry (rise, twist, helical order) in the symmetry relaxation?

Many structures exhibit pseudo-helical symmetry, such as microtubules, filament ends and sparsely decorated patterns along the filaments.

Adding this feature would be extremely helpful for comparing symmetry-related positions and better capturing structural variability along helical axes.

– Rui Zhang

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