title: List of Image "modes"
body: <p>Looking through PIL (and related to <a href="https://stackoverflow.com/questions/4199497/image-frombuffer-with-16-bit-image-data">this question</a>), where can I get a comprehensive list of Image modes? I see "RGB", "RGBX", my code has "BGRX" somehow even though it's not mentioned in the PIL docs that I can see. How can I see which is which, what PIL supports, and what proper modes to select when interacting with windows API calls, for example?</p>
  
  <p>Basically I know very little about image modes and would like to learn more than just what letters to put in to make it magically work.</p>