The Save Diagram As command can also be used to generate a new diagram based on the current selection set. When no schematic element is selected in the active diagram, it copies the entire diagram, but when schematic elements are selected, only that selection set will be saved in the new diagram.

Click the Select Schematic Elements button and select a few elements on the diagram by drawing a box with the tool.

Click the Schematic drop-down menu on the Schematic toolbar and click Save Diagram As.

Type a name for the diagram in the Schematic Diagram Name text box ("DiagramFromSchematicSelection", for example).

Keep the default [Create New Data Frame] option and click Save. A new data frame is added to the TOC. As the Multi Views mode is activated, the new diagram is displayed in a viewer window.

Note: Even if the resulting diagram seems to be based on the only selection set specified in the initial diagram, the whole initial diagram content is stored in the schematic database tables; the unselected elements are flagged as undisplayed elements for that resulting diagram exactly as if they have been manually removed using the Remove Schematic Elements command. This will cause these undisplayed elements to be automatically restored if the diagram is updated with the Persist manually removed or reduced elements option uncheked.