晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //usr/share/doc/jbigkit-libs/TODO
Features that may appear in some future release regarding jbig.c:

  - function to prepare incompletely decoded images for display by Xlib

  - use a more efficient resolution-reduction method suggested by
    Dr. Klaus Bartz <bartzkau@kou3.ina.de>

  - investigate whether there is a standard way of embedding JBIG
    into TIFF and implement it (see also RFC 2301)

  - test for and eliminate warning messages from compilers
    other than GCC

  - multichannel (e.g., RGB) support, PPM support

  - add dynamic library target to Makefile (patch by David Woodhouse),
    for the benefit of Linux packagers

The NEWLEN handling in jbig.c remains less than ideal. There is no
easy fix as NEWLEN is inherently incompatible with many of the other
options that jbig.c supports. The whole point of the VLENGTH bit may
have been to allow recipients to choose between a jbig.c (VLENGTH=0)
and jbig85.c (VLENGTH=1) style of decoder implementation. The cleanest
option would really be to remove NEWLEN support entirely from jbig.c
and to urge users who need it to use jbig85.c instead. Short of that,
the new NEWLEN look-ahead architecture from jbig85.c could be
backported to jbig.c, but this would only only slightly increase the
number of cases where the jbig.c decoder could deal with a NEWLEN
marker without a prior invocation of the jbg_newlen() pre-processing
pass.

The following past feature requests for jbig.c probably have become
less important since the release of jbig85.c:

  - compile-time option to remove progressive encoding and
    resolution-reduction support (in the interest of reducing code size)

  - investigate how to best deal with broken BIEs that contain
    multiple NEWLEN marker segments, which are not permitted by ITU-T
    T.85, but which have been observed coming from some fax machines;
    possible options for jbg_newlen(): use first, last, or minimum
    value

  - version of jbg_newlen() for dealing with BIEs that are split
    into several blocks

  - call-back function for progress meter

Features that may appear in some future release regarding jbig85.c:

  - man pages for pbmtojbg85 and jbgtopbm85

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