1. A system, comprising: an electrode structure which, in use, is deployed in contact with heart tissue; and an interface, the interface including a controller coupled to the electrode structure operating to condition the electrode structure to perform a diagnostic or therapeutic procedure and to monitor events during the procedure, a display screen, and an interface manager coupled to the controller and the display screen, the interface manager including a first function to generate a display comprising an image of the electrode structure at least partially while performing the procedure, and a second function to annotate the image in response to events monitored by the controller, wherein the electrode structure and displayed image of the electrode structure includes a plurality of electrodes and further including a function to find an electrode on the display by entering a coordinate of the electrode.