If a - is given as input file, stdin is used.

If the input data is malformed, a warning is printed to stderr, and the output file will have a blank line at this place.

-l

separate files with a one-pixel wide black line.

-h <blank lines>

specifies the number of blank lines g3cat should prepend to each page. Default is 0.

-L <lines>

limit lenght of output page to maximum <lines> lines.

-w <width>

specifies the desired page width in pixels per line. Default is 1728 PELs, and this is mandatory if you want to send the fax to a standard fax machine. If one of the input files doesn't match this line width (for example because it was created by a broken G3 creator), a warning is printed, and the line width is transparently fixed.

-a

byte-align the end-of-line codes (EOL) in the file. Every EOL will end at a byte boundary, that is, with a 01 byte.

-p <pad>

specifies a minimum number of bytes that each output line must be padded to. Padding is done with 0-bits before the EOL code.

-R

suppress output of end-of-page code (RTC).

echo '$header' | pbmtext | pbm2g3 | g3cat - page1 >page2