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g3topbm.1
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1995-07-25
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67 lines
gggg3333ttttooooppppbbbbmmmm((((1111)))) XXXXEEEENNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV ((((00002222 OOOOccccttttoooobbbbeeeerrrr 1111999988889999)))) gggg3333ttttooooppppbbbbmmmm((((1111))))
NNNNAAAAMMMMEEEE
g3topbm - convert a Group 3 fax file into a portable bitmap
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
gggg3333ttttooooppppbbbbmmmm [----kkkklllluuuuddddggggeeee] [----rrrreeeevvvveeeerrrrsssseeeebbbbiiiittttssss] [----ssssttttrrrreeeettttcccchhhh] [_g_3_f_i_l_e]
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
Reads a Group 3 fax file as input. Produces a portable
bitmap as output.
OOOOPPPPTTTTIIIIOOOONNNNSSSS
----kkkklllluuuuddddggggeeee
Tells _g_3_t_o_p_b_m to ignore the first few lines of the
file; sometimes fax files have some junk at the
beginning.
----rrrreeeevvvveeeerrrrsssseeeebbbbiiiittttssss
Tells _g_3_t_o_p_b_m 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.
----ssssttttrrrreeeettttcccchhhh
Tells _g_3_t_o_p_b_m 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
prefix.
RRRREEEEFFFFEEEERRRREEEENNNNCCCCEEEESSSS
The standard for Group 3 fax is defined in CCITT
Recommendation T.4.
BBBBUUUUGGGGSSSS
Probably.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
pbmtog3(1), pbm(5)
AAAAUUUUTTTTHHHHOOOORRRR
Copyright (C) 1989 by Paul Haeberli <paul@manray.sgi.com>.
Page 1 (printed 9/7/93)