These nodes support an Edit Variable toolbar button that opens up the Edit Variable dialog. In this dialog, it is possible to change more settings that those visible as columns in the table. If there are several variables in the table, you can step through the table without closing the dialog using the Previous Row (Discard Changes), Previous Row (Store Changes), Next Row (Discard Changes), and Next Row (Store Changes) toolbar buttons. The settings are equivalent to those for normal variables in the Physics Builder; see Variable Declaration for more details. The Elimination weight field under Advanced (only available for Device Variables) sets a priority order for eliminating variables in the final device system. A higher number is more likely to get eliminated. Those variables that are not eliminated either become states or are constants. All variables declared by the Device States and Discrete Device States nodes always become states.

The Device Variables node under a Port Model (port variables) includes two special settings. Select the Flow variable checkbox to indicate that the variable is treated as a flow in connections between ports. The second special setting is the Declare external node connection variables and use them instead checkbox. It is only applicable for the plot menu and not for flow variables, so it is available when the Flow variable checkbox is not selected and when the selection in the Show in plot menu list is not set to Never. When selected, it means that the actual variable will not be present in the plot menu but instead it shows the variable generated for the connection. A connection is two or more ports connected together, so selecting this checkbox typically gives much fewer variables in the plot menu.