SIT
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SIT is recursive acronym of SIT Improves Tar. SIT is the file format and the
  program and library to handle these files, to store files and directories, but
  unlike Tar, with random access.
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║SIT (C) 2012 Jesús Hernández Gormaz                                           ║
║This program is free software; you can redistribute it and/or modify it       ║
║  under the terms of the GNU General Public License as published by the Free  ║
║  Software Foundation; either version 3, or (at your option) any later        ║
║  version.                                                                    ║
║This program is distributed in the hope that it will be useful, but WITHOUT   ║
║  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       ║
║  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for    ║
║  more details.                                                               ║
║You should have received a copy of the GNU General Public License along with  ║
║  this program; if not, write to the Free Software Foundation, Inc., 675 Mass ║
║  Ave, Cambridge, MA 02139, USA.                                              ║
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                                    SIT FORMAT
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A file in SIT format is as a TAR format but with random access and more avanced.