Provides options for clipping the active view by selected objects.
Select Objects
Specifies the objects to clip such as pipes, equipment, duct, and so forth. The objects
define the clipping boundaries. If you have already selected objects before selecting
the Clip by Object 
command, you can proceed by accepting the selected objects or add more objects to
the select list.
Select View
Selects and applies the clipping to windows other than your active window. The clipping boundary based on the selected objects is applied to each view you select.
Reject
Clears the objects you select with the Select Objects command. Use this command when you want to start over. This button is not available when the Select View button is active.
Accept
Hides all objects except the selected objects in the active view. This button is not available when the Select View button is active.
Close
Displays the clipping in the active view, completes the Clip by Object command, and returns you to the last command you used before you selected Clip by Object .
Fit View
Controls whether to fit the view to the graphics when you run the Clip by Object command. By default, the Fit View option is checked, and the command clips the view and fits the view to the graphics. If the option is off, the command only clips the view but does not fit the view to the graphics. A change to the option setting takes effect the next time you run the command.
Objects connected to a rotated coordinate system will be clipped according to the
global coordinate system.