title: What is the format "BM6"?
body: <p>I am working with an old system of palletes. When I export an image, it also creates an pallete with 15/16 colors. But when I try to replicate the same result, the program does not recognize the image which I just created. To analyse what happened, I opened  some images with notepad and compared them with my &quot;creation&quot; and I noticed quite some differences.</p>
  <p>But the most interesting thing was that at the beginning of my images' code was the type &quot;BM6&quot;, while they should be &quot;png&quot; or &quot;bmp&quot;. I think that is some thing of codification, but I cannot find anything about it.</p>