ECAD Selection Filter Functionality

When you set a selection filter, subsequent selections are made according to that filter until another selection filter is selected, or until the end of the session. The default is Smart Selection.

Selection Filter	Schematic View	PCB Layout View
Smart	Use to select any object that does not meet more specific criteria or selection options.
Component	The component symbol is selected when any of its associated objects are selected in the graphics area.	The component is selected when any of its associated object are selected in the graphics area.
Net	When you select objects associated with a net, the entire net is selected and highlighted in the graphic view and the structure.
Deselect All	Deselects all current selections.