Tom--
Sorry, but I agree with the PCB stuffer. Square end = ANODE
Chamfered end = CATHODE
Using as reference: AMERICAN NATIONAL STANDARD (ANSI Y32.2)
CANADIAN STANDARD (CSA Z99)
IEEE STANDARD (IEEE STD 315)
"GRAPHIC SYMBOLS FOR ELECTRICAL AND
ELECTRONICS DIAGRAMS"
ANODE (A) ----|>----- CATHODE (K)
Hope you can understand my picture. Have a good day.
Bob Vanech