Combine the mayonnaise, lime juice, honey, mustard and dill. Spread over the fish and place on a broiling pan. Sprinkle the fish lightly with salt and pepper. Pat the bread crumbs on top of the fish and dot with the margarine. Broil about 5 inches from the heat source under a hot broiler 12 minutes per inch of thickness, or until the fish tests done (140 degrees on an instant read thermometer). The fish can be served with lime wedges. Note: Panko bread crumbs can be found in the Asian food section of major supermarkets. By Larry Brown of the Seattle Times writing in the San Jose Mercury News. 6/9/93.