Define here the bond visual representation.
Style
The 
Style option menu controls the bond visual representation: 
with cylinders in 
Solid mode, with simple lines in 
Wired 
mode. By default, the 
Wired mode is used. To change the default 
select 
Bond->Config.
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.
The default is to represent atoms with a 
Size (
0.8) 
slightly larger than bonds (
0.5). To change the default select 
Bond->Config. 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. To change the default select 
Bond->Config.
R, G, B
Set 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
Set 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).