Change here the visual representation of the bond (or list of bonds,
previously selected with Bond->Select, when 
Global is pressed).
Parameters for empty entries or 
Local choices remain unchanged.
Style
The 
Style option menu controls the bond visual representation: 
cylinders in 
Solid mode, simple lines in 
Wired mode. 
The cylinder gives a high visual quality, when coupled with lights and 
perhaps a perspective projection. A cylinder uses considerable screen 
space though and is time consuming. 
Wired objects do not have a 3D representation, so diffuse and 
specular lights are not reflected, becoming poorly invisible when using 
lights, unless the ambient component is important.
Size
In 
Solid mode, this parameter controls the size of the bond
cylinders. Combining bond 
Size with atom 
Variancy
and 
Size, it is possible to obtain a wide range of styles
to represent atomic structures.
An elegant style is to represent bonds with the same 
Size 
as atoms (
0.5).
To guarantee that bond cylinders are closed by atom spheres,
bond 
Size should not be larger than atom 
Size.
Color
The 
Color button controls whether the bond is represented with 
its own, independent color, or inherits the colors of the parent atoms.
By default colors are inherited.
R, G, B
Change the bond color, from black (0.0, 0.0, 0.0) to white (1.0, 1.0, 1.0),
when the bond is rendered with its own, independent, color.
Scale
Change the bond size, including its child objects. Bond objects are
scaled around the bond line. The visual representation of an object
is always scaled by its own scale factor multiplied by the scale factor
of all its parent objects until layer, inclusive.
Line widths in GAMGI are not affected by 
Scale attributes, so
bonds represented in 
Wired mode remain unchanged by 
Scale
(but not its child).