Identify > Use Permanent Selection (F12) (Extra Menu)

This command can be used to identify all at the moment permanently selected objects.

In this way a permanent selection can be used as a container for a frequently required group of objects. If you stop working on a group for a moment you can mark the group by permanently selecting its objects to continue working on it later. For that choose the command Permanent Selection > Set and press the F11 Key. This permanently selects all previously identified objects. You can now identify other objects and work with them without affecting the permanent selection

If you now want to work with the permanently selected objects again, press the F12 key to identify them. If the permanent selection is no longer required, it can be deleted using the command Permanent Selection > Clear.