TYPE: SOP
TITLE: Unpaste SOP

The Unpaste operation removes one or more pasted surfaces from a paste
hierarchy, causing the hierarchy to update. It can keep either the unpasted
surfaces or what remains pasted in the hierarchy after the removal of the
unpasted surfaces.

Unpaste accepts both pasted surfaces and entire paste hierarchies as inputs.
For example, to turn a paste hierarchy into a set of unrelated surfaces, enter
the hierarchy number in the Group field.

By preserving the hierarchical structure, but not the shape, of the unpasted
surfaces, the resulting sub-hierarchy can be reapplied properly to another
hierarchy later on. The shape and the size of the sub-hierarchy may change
considerably as a result of the unpasting operation. This is because the
feature surfaces are always mapped onto the domain of the base surface, and the
size of the domain is completely unrelated to the size of the actual surface.

By unpasting the root of the paste hierarchy the whole hierarchy becomes undone.

Parameters:

    Group                       - Subset of pasted surfaces or paste hierarchies
    Include All Nested Children - Unpaste the surface with all its nested nodes

Keep Unpasted Part
    Overview			    - Keep only the unpasted surface(s)
    Preserve Pasted Shape           - Preserve the shape they had when pasted
    Preserve Hierarchical Structure - Extract as a new paste hierarchy

Keep Remaining Hierarchy
    Overview			- Delete the unpasted surface(s)

See also: Paste, Delete
