[comp.dcom.fax] format of fax file on PC

GSRGAAO@TECHNION.BITNET (David Tal) (01/07/91)

To the members of this Special Interest Group:
     I am looking for software, if it exists, which will take a file
 received (or prepared by) FAX software which comes with most FAX cards
 and will allow me to edit the file (slice horizontrally) in a manner such
 that I can create my own FAX "sandwich" from a number of horizontal
 strips.
     The reason for this is that I do not have (or desire) a scanner, but
 wish to send out letters under my letterhead and over my signature.  The
 pieces will be put together from a received FAX of a signed blank
 letterhead I have had sent to me by a FAX service + the text specific to
 each letter.  The received fax was cleaned up by converting to paintbrush
 (.PCX) format, fixing up, and reconverting to FAX format.
     Lacking this, could somebody point me to, or explain how fax's are
 stored on the PC?  They are not exactly as prescribed in EIA RS465 and
 466 documentation, since they contain headers, etc.  although they are
 packed in modified Huffman code.  Can you tell me the exact
 specification, or at least how it differs from RS465?
      Send replies either to this bulletin board or to me personally,
GSRGAAO@TECHNION.BITNET       Many thanks.
                                          David Tal