NAME
     StyleRibbon - set display style of ribbons

SYNOPSIS
     StyleRibbon ( invisible | rect | round |
	 rounded | ellip | lense | as_is )
	 [ ( open | sharp | soft | as_is )
	 [ ( open | sharp | soft | arrow | as_is )
	 [ ( const | atom | as_is ) ] ] ]

DESCRIPTION
     Set the display style of all selected ribbons. The
     first argument gives the profile of the middle part,
     the optional second and third argument determine the
     style of the start and the end.

     The fourth argument only has an effect when the
     profile is 'round'. With the value 'atom', the radius
     is interpolated between the radii of the atoms used to
     define the spline, normally the CA atom for proteins.
     This can e. g. be used to show mobility by varying
     radius of the spline if the radius of the atoms is set
     to (a function of) the B-factor. For bundles of NMR
     structures, the B-factors can be calculated by
     MeanMol.

     For all arguments, the value 'as_is' will leave the
     style unchanged, this is useful when one wants to
     change part of the values for multiple ribbons at
     once.

EXAMPLES
     StyleRibbon rect
     StyleRibbon rounded sharp arrow
     StyleRibbon round open open atom

SEE ALSO
     AddRibbon, SelectPrim, LengthPrim,
     TypeRibbon, SizeRibbon, PaintRibbon,
     MeanMol, RadiusAtom

DATE
     950509
