image/png                      png              # Portable Network Graphics
image/tiff                     tiff tif         # TIFF image file
image/x-cmu-raster             ras              #
image/x-portable-anymap        pnm              #
image/x-portable-bitmap        pbm              #
image/x-portable-graymap       pgm              #
image/x-portable-pixmap        ppm              #
image/x-rgb                    rgb              # RGB Image File

    <glob pattern="*.pic"/>
    <glob pattern="*.pct"/>
    <glob pattern="*.pict"/>
  </mime-type>

  <mime-type type="image/x-portable-anymap">
    <acronym>PNM</acronym>
    <_comment>Portable Any Map</_comment>
    <glob pattern="*.pnm" />
  </mime-type>

  <mime-type type="image/x-portable-bitmap">
    <sub-class-of type="image/x-portable-anymap"/>
    <acronym>PBM</acronym>