Indicate how to remove a group (or list of groups, previously         
selected with Group->Select, when 
Global is pressed).
Scope
When the 
Scope is 
All, the group and all 
its contents is removed. This is the default.
When the 
Scope is 
Container, the group is removed but
its contents (child groups, planes, directions, atoms, bonds, orbitals, 
texts) is saved, linked to the group parent. 
When the 
Scope is 
Contents, the group is preserved but 
all its contents (groups, planes, directions, atoms, bonds, orbitals, 
texts) is removed. 
When the 
Scope is 
group, 
plane, 
direction, 
atom, 
bond, 
orbital or 
text, these objects 
are removed from the group.
When the removed group included the current object,
the current layer becomes the new current object.
Clicking the mouse over a group in the current layer, its identification
is transported to the dialog and 
Ok is automatically pressed.
To recover the previous state press 
Undo.