The present invention provides methods for the conversion of thebaine to a morphine derivative, such as hydrocodone. The metal structure is resilient against flexural loads, torsional loads, and other deformations from the exterior upon the display unit composed of thin plate glass, because the member that protects the display unit is in a box shape. The screen files each include a plurality of display control elements and a list of events to be trapped and forwarded to the server. The top surface of the substrate is substantially coplanar with a fin bottom surface corresponding to the first and second group of fins.