g3topbm man page on BSDi

g3topbm man page on BSDi

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g3topbm(1)					     g3topbm(1)

NAME
       g3topbm	-  convert  a  Group  3 fax file into a portable
       bitmap

SYNOPSIS
       g3topbm [-kludge] [-reversebits] [-stretch] [g3file]

DESCRIPTION
       Reads a Group 3 fax file as input.   Produces  a portable
       bitmap as output.

OPTIONS
       -kludge
	      Tells  g3topbm to ignore the first few lines of the
	      file; sometimes fax files have  some  junk  at  the
	      beginning.

       -reversebits
	      Tells  g3topbm  to interpret bits least-significant
	      first,  instead  of  the	default most-significant
	      first.   Apparently  some fax modems do it one way
	      and others do it the other way.  If you get a whole
	      bunch  of "bad code word" messages, try using this
	      flag.

       -stretch
	      Tells g3topbm to stretch the  image  vertically  by
	      duplicating  each row.  This is for the low-quality
	      transmission mode.

       All flags can be abbreviated to their shortest unique pre-
       fix.

REFERENCES
       The standard for Group 3 fax is defined in CCITT Recommen-
       dation T.4.

BUGS
       Probably.

SEE ALSO
       pbmtog3(1), pbm(5)

AUTHOR
       Copyright (C) 1989 by Paul Haeberli <paul@manray.sgi.com>.

			 02 October 1989			1

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