Command entry:Select one or more groups.
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Group menu
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Open
Command entry: Scene Explorer 
Right-click a group entry.
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Groups
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Open Group
The Open command lets you ungroup a group temporarily, and access objects within a group.
You can transform and modify the objects within the group independently from the rest of the group, then restore the original
group using the Close command.
Procedures
To open a group:
- Select one or more groups.
- Choose Group
Open. A pink bounding box appears, and the objects in the group are now accessible.
To open nested groups:
- Select the group within the opened group.
- Choose Group
Open.