Ribscale controls which ribbon scaling (named set of secondary-structure-specific dimensions) is used. Possible scaling settings include:
Scaling names containing spaces should be enclosed in single or double quote marks, for example:
ribscale "Chimera default" :1-8.bEven if only particular atoms are specified, the ribbon segment(s) corresponding to the entire residue(s) containing the atoms will be affected.
Known problem: reassigning secondary structure (for example, by using ksdssp) sets the scaling of some residues to Chimera default; any other scalings previously in effect need to be reapplied.
See also: ribbon, ribbackbone, ribrepr, the Ribbon Style Editor