Cartoon Helix Settings
This is a display setting.
It acts on the section of cartoon-represented helices. When turned off, the section is an ellipsoid. When turned on, the section is a line with circles on each end. The resulting helices are pretty slick ribbons with tubular edges a la MolScript.
set cartoon_fancy_helices, 1
set cartoon_fancy_helices, 0
Could someone edit in some images ? I do not know how to do that yet.