Improve BANDing by dividing it into two functions: to tie animo acids to a fix point in space, AND, to tie amino acids to a point a relative distance and angle from the backbone.

I would call the first function, tying amino acid to a fix point in space, an ANCHOR. I would call the second function, tying amino acid in a relative angle and distance from the backbone, a BAND.

Anchoring should allow user to tie an animo acid to a point in space.

Banding should allow user to tie an amino acid to a fixed point in relation to the backbone. If we give the backbone a direction, e.g. start to finish, and give backbone an angle reference 0-360 degrees, a band could be described with two angles, e.g. -180 to +180 around backbone and +90 to -90 from start to finish. This would allow banding to be used to straighten a group, for example.

Much the same way as someone with a broken arm would have a cast made which keeps the arm in a fixed relationship with the body, BANDS would be used to pull amino acids in relationship to the backbone. And in the same way that a ship's anchor would keep the boat tied to a fixed point in space, ANCHORS would pull on the protein to a fixed position in space.