Set here the translation applied to the child object or list of objects.
When linking a direction to another object, the translation is always
applied to the child object: the direction itself when linking above,
the other object (atom, orbital, text) when linking below.
The final child position is given by this translation vector added
to the child or parent origin, as defined by the
Reference option.
By default this is the child origin and the translation vector is
0.0,
0.0,
0.0, so no translation is applied.
When a list of directions is linked above,
Reference is set by default
to
Child, so directions preserve their positions and are not superposed.
When a list of directions is linked below, each direction will be linked to a new,
automatically created, child object, and
Reference is set by default
to
Parent, so childs remain near their parent directions and are not superposed.