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When an object is removed it leaves a gap in the Soup. Other
objects do not move to fill the gap.
RefAtoms
pointing to the object which was removed are not updated. This means
you can remove one object and replace it with a substitute. Other
IndirectObjects in the Soup will then refer to the new object rather
than the old one.
However it also means that you should be careful about removing
an object and not replacing it. Because the slot is free it may
be re-used and any references which exist may then point to a new
- inappropriate - object.
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Syntax