\ .\" This man page was generated by the Netpbm tool 'makeman' from HTML source. .\" Do not hand-hack it! If you have bug fixes or improvements, please find .\" the corresponding HTML page on the Netpbm website, generate a patch .\" against that, and send it to the Netpbm maintainer. .TH "Pbmtog3 User Manual" 0 "03 December 2008" "netpbm documentation" .SH NAME pbmtog3 - convert a PBM image into a Group 3 MH fax file .UN synopsis .SH SYNOPSIS \fBpbmtog3\fP [\fB-reversebits\fP] [\fB-nofixedwidth\fP] [\fIpbmfile\fP] .UN description .SH DESCRIPTION .PP This program is part of .BR Netpbm (1) . .PP \fBpbmtog3\fP reads a PBM image as input and produces a Group 3 MH fax file as output. .PP You can also generate a TIFF file that uses the same encoding inside, with \fBpamtotiff\fP. .PP There is no program in Netpbm that generates other fax formats, such as MR and MMR, but \fBpamtotiff\fP can generate TIFF files that use those encodings. .UN options .SH OPTIONS .TP \fB-reversebits\fP This option causes the output to have the bits in every byte reversed so the least significant bit becomes the most significant bit. Apparently, there is some ambiguity in transmission protocols so that the bits get reversed on transmission, and this compensates for that. If you get a whole bunch of "bad code word" messages when you try to read the G3 file (e.g. with \fBg3topbm\fP), try using this option. Note that the output is not G3 when you use this option. .TP \fB-nofixedwidth\fP Most fax machines expect the image to be 1728 columns wide, so \fBpbmtog3\fP cuts the output to this width by default. If you want to keep the width of the original image, use this option. .sp This option was new in Netpbm 10.6 (July 2002). Before that, \fBpbmtog3\fP always kept the width of the original image. .UN seealso .SH SEE ALSO .BR g3topbm (1) , .BR pamtotiff (1) , .BR pbm (5) .BR fax formats (1) .UN author .SH AUTHOR Copyright (C) 1989 by Paul Haeberli <\fIpaul@manray.sgi.com\fP>.