<dl>
<dt><b><tt>-dDisplayFormat=</tt></b><b><em>N</em></b> (integer bit-field)
<dd>Some common values are 16#30804 for Windows RGB, 16#804 for gtk+ RGB,
16#20101 for Windows monochrome, 16#102 for gtk+ monochrome,
16#20802 grayscale, 16#20808 for CMYK, 16#a0800 for separations.
The bit fields are
<ul>
<li> native (1), gray (2), RGB (4), CMYK (8), or separation (80000)
  color spaces.
<li> unused first byte (40) or last byte (80).
<li> 1 (100), 4 (400), or 8 (800) bits/component.
<li> bigendian (00000 = RGB)