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Click Tools > Recompute Objects to display the Recompute Objects Ribbon.
This command is available in the Compartmentation, Molded Forms, Planning, Structural Detailing, and Structural Manufacturing tasks.
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Click Choose Business Object Types
, and specify which types of objects to update.
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Select objects in the graphic view.
If you make a mistake, click Reject 
and then start selecting objects again.
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Click Accept
to compute the changes.
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Click Finish to save the changes to the database.
Use the list at the far right of the ribbon to specify at which points the software
saves the changes: after processing all the business objects, after processing each
class of object, or after processing each individual business object.