A connected instrument procedure placekeeping system, comprising: a navigation database having flight plan data stored therein; a flight deck display coupled to receive image rendering display commands and configured, in response thereto, to render images; a flight deck processor in operable communication with the navigation database and the flight deck display, the flight deck processor configured to selectively retrieve flight plan data from the navigation database, the retrieved flight plan data representative of an instrument procedure that includes a plurality of waypoints and constraints, the flight deck processor further configured to supply image rendering display commands to the flight deck display that causes the flight deck display to render images of the instrument procedure; and an electronic device in operable communication with the flight deck processor and configured to simultaneously render an image of a published representation of the instrument procedure that is being rendered on the flight deck display, characterized in that: one of either the flight deck processor or the electronic device is responsive to user input signals to (i) cause a waypoint and its associated constraint of the rendered instrument procedure to be highlighted, the associated constraint comprising at least one of a vertical constraint and a speed limit, and (ii) supply data representative of the highlighted waypoint and its associated constraint to the other of the electronic device or the flight deck processor, respectively, and the other of the electronic device or the flight deck processor is responsive to the supplied data to cause the waypoint and its associated constraint of the rendered instrument procedure to be simultaneously highlighted for ease of comparison. a navigation database having flight plan data stored therein; a flight deck display coupled to receive image rendering display commands and configured, in response thereto, to render images; a flight deck processor in operable communication with the navigation database and the flight deck display, the flight deck processor configured to selectively retrieve flight plan data from the navigation database, the retrieved flight plan data representative of an instrument procedure that includes a plurality of waypoints and constraints, the flight deck processor further configured to supply image rendering display commands to the flight deck display that causes the flight deck display to render images of the instrument procedure; and an electronic device in operable communication with the flight deck processor and configured to simultaneously render an image of a published representation of the instrument procedure that is being rendered on the flight deck display, characterized in that: one of either the flight deck processor or the electronic device is responsive to user input signals to (i) cause a waypoint and its associated constraint of the rendered instrument procedure to be highlighted, the associated constraint comprising at least one of a vertical constraint and a speed limit, and (ii) supply data representative of the highlighted waypoint and its associated constraint to the other of the electronic device or the flight deck processor, respectively, and the other of the electronic device or the flight deck processor is responsive to the supplied data to cause the waypoint and its associated constraint of the rendered instrument procedure to be simultaneously highlighted for ease of comparison. one of either the flight deck processor or the electronic device is responsive to user input signals to (i) cause a waypoint and its associated constraint of the rendered instrument procedure to be highlighted, the associated constraint comprising at least one of a vertical constraint and a speed limit, and (ii) supply data representative of the highlighted waypoint and its associated constraint to the other of the electronic device or the flight deck processor, respectively, and the other of the electronic device or the flight deck processor is responsive to the supplied data to cause the waypoint and its associated constraint of the rendered instrument procedure to be simultaneously highlighted for ease of comparison.