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EFIX(1)								       EFIX(1)

NAME
       efix - convert between fax, text, bit-map and gray-scale formats

SYNOPSIS
       efix [ options ] file...

OPTIONS
       Where options are:

       -i f	the  input  image  is in format f. Default is to automatically
		determine the input type from its contents.

	  fax	fax ("Group3") 1-D coded image

	  text	text.  Line feeds separate lines, form feeds cause page breaks
		and tabs are expanded assuming tabs every 8 columns.

	  pbm	raw PBM (portable bit map)

	  tiffg3
		TIFF format with Group 3 (fax) compression.

	  tiffraw
		TIFF format with no compression.

       -o f	write the output in format f.  Default is tiffg3.

	  fax	fax ("Group3") 1-D coded image

	  pbm	raw PBM

	  pgm	raw  PGM  (Portable Gray Map).	Gray-scale values are produced
		by summing pixels in 4x4 pixel blocks.	The output file is 1/4
		of  the size given by -p.  The resulting image has 17 discrete
		values between 0 and 255.

	  pcl	HP-PCL (e.g. HP LaserJet).

	  ps	encapsulated Postscript (e.g. Apple Laserwriter).  The file is
		compressed using differential coding vertically and run-length
		coding horizontally.  There is no  provision  for  positioning
		the  image within the page and so the image will appear at the
		lower left corner of the page when printed.

	  tiffg3
		TIFF format with Group 3 (fax) compression.

	  tiffraw
		TIFF format with no compression.

       -n pat	use the printf(3) pattern path to  generate  the  output  file
		name.	Up  to	three  %d escapes will be replaced by the page
		number starting with 1 (e.g. -n order.%03d  will  create  file
		names order.001, order.002, etc.)

       -v lvl	print  messages of type in string lvl.	Each lower-case letter
		in lvl enables one type of message:

		   e - errors
		   w - warnings
		   i - information messages
		   a - program arguments
		   f - file format details

		The default is "ewi".

       -f fnt	use font file fnt for text.  The font file  for	 an  WxH  font
		should	be  a bit map of an image of H rows and 256*W columns.
		Each successive WxH cell contains the bit map  for  characters
		with  codes  from  0 to 255.  The default is to use a built-in
		8x16 font.

       -s XxY	scale the input by a factor of X  horizontally	and  Y	verti‐
		cally.	 Scaling  does	not change the size of the output (use
		-p).  If Y is not specified it is assumed to be the same as X.
		Any  floating point value may be used for X and Y. The default
		is 1,1.

       -d R,D	displace the output right by R and down by D (opposite if neg‐
		ative). See below for units.  Default is 0,0.

       -p WxH	truncate or pad the output to generate an image of width W and
		height H.  This does not  scale	 the  input.   See  below  for
		units.	 The  default is the size of the input image if it can
		be determined or A4 (215x297mm) if it can't.

       -r XxY	assume an output device resolution of X by Y  dots  per	 inch.
		If  Y is not specified it is assumed to be the same as X.  The
		default is the input resolution if it can be determined or the
		fax resolution of 204.1x195.6 dpi if it can't.

       -R XxY	assume an input device resolution of X by Y dots per inch.  If
		Y is not specified it is assumed to be the  same  as  X.   The
		default is the input resolution if it can be determined or the
		fax resolution of 204.1x195.6 dpi if it can't.

       -l n	place n lines per page during text input. Default is 66.

       -O f	overlay (logical OR) the image from file f  into  the  output.
		Use "-" for standard input (-O-).  Default is no overlay file.

       -M	ignore	all  other  options and copy the standard input to the
		standard output while applying base64 (MIME) encoding as spec‐
		ified by RFC 1521.

FILES
       If no -n options are given, output is written to the standard output.

UNITS
       The  units of the W, H, R, and D values above are in inches by default.
       Any floating point value may be used.  Units  of	 inches,  centimetres,
       millimetres  or	points	(72 per inch) can be used instead by appending
       one of the strings `in', `cm', `mm', or	`pt'  to  the  argument	 (e.g.
       -d2,4cm).

CUT AND PASTE
       The  -d and -p options allow efix to cut out images from received faxes
       for use in other faxes or documents.  The -d option specifies  the  top
       left  portion  of the desired image and the -p option gives the size of
       the cut image.  For example, the command
		   efix -d-5,-8 -p2,1 sample.001 >sig.001
       would cut out part of the input with its top left corner 5 inches  from
       the  left  edge	and  8 inches from top of the input image.  The output
       image would be 2 inches wide and 1 inch high.

       The -O option allows efix to superimpose two or more images.  The over‐
       lay  image  must	 be  in	 fax format and cannot be scaled, truncated or
       shifted. However, multiple efix	commands  may  be  used	 to  transform
       images before combining them.  For example, the commands
		   efix -d4,8 signature >sig.fax
		   efix -O sig.fax letterhead >letterhead.fax
		   efix -O letterhead.fax letter.002 >letter.002.new
       will  shift  the	 image in the file signature down 8 inches and right 4
       inches and combine (overlay) it with the images in the files letterhead
       and letter.002.

REFERENCES
       Gunter  Born,  "The File Formats Handbook", International Thompson Com‐
       puter Press, 1995.

COPYRIGHT
       efix is copyright 1994 -- 1999 by Ed Casas.  It may be used, copied and
       modified under the terms of the GNU Public License.

DISCLAIMER
       Although	 efix  has been tested it may have errors that will prevent it
       from working correctly on your system.  Some of these errors may	 cause
       serious problems including loss of data.

SEE ALSO
       efax(1), ghostscript(1), pbm(5), pgm(5).

BUGS
       Only reads two types of TIFF compression formats.

       Does not write multi-page TIFF files (a feature).

3rd Berkeley Distribution	 February 1999			       EFIX(1)
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