Marantz does as do several others... with my sister being in the market for a TV (poor market 'cause we have to work for our money - no Marantz plasma for her), I won't let her buy one unless I can find the discreet codes for it.
Having once decided to achieve a certain task, achieve it at all costs of tedium and distaste. The gain in self-confidence of having accomplished a tiresome labor is immense. -----Arnold Bennett