OUT G3</H2>

<P>G3 is the near universal format used by fax machines.  There is also
a newer, more capable G4.

<p>The standard for Group 3 fax is defined in CCITT Recommendation T.4.
In the U.S., that is implemented by EIA standards EIA-465 and EIA-466.
These standards cover the layers below the image format (which are
irrelevant to <b>g3topbm</b> as well.

<p>G3 faxes are 204 dots per inch (dpi) horizontally and 98 dpi (196
dpi optionally, in fine-detail mode) vertically.  Since G3 neither
assumes error f