title: Why do Photoshop files start with 8BPS?
body: <p>From pretty much the beginning of time Photoshop files have begun with 8BPS. (I have verified this back to version 2.5) It must have had some meaning at some point.</p>
  
  <p>The 8B I thought might refer to bits/channel, but it makes no difference saving it 16 or 32. PS is probably PhotoShop, but might not be. Something to do with the way Mac saved files? </p>