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