This command is only available if multiple 2D data objects are merged in one data view. One of the 2D data objects is always meant to be the active object. If this command is applied, all 2D data objects, except the current active object are closed.
The clear view command is performed as follows:
To clear the data view using the menu command, please follow the instructions below:
Activate the 2D data object you like to keep open.
From the 2D View menu, select the Clear View command.
None.