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Warning: Cannot modify header information - headers already sent in /usr/local/www/mediawiki/includes/WebResponse.php on line 38 http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=Softdisk_Publishing_UDF_filesSoftdisk Publishing UDF files - Revision history2024-12-28T19:49:32ZRevision history for this page on the wikiMediaWiki 1.19.2http://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=34777&oldid=prevDan Tobias: /* Sample files */2020-02-12T00:03:08Z<p><span dir="auto"><span class="autocomment">Sample files</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Sample files ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Sample files ==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>* [<del class="diffchange diffchange-inline">http</del>://www.dan.info/sampledata/softdisk/SOKOBAN.UDF SOKOBAN.UDF]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>* [<ins class="diffchange diffchange-inline">https</ins>://www.dan.info/sampledata/softdisk/SOKOBAN.UDF SOKOBAN.UDF]</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Softdisk]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Softdisk]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Puzzles]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Puzzles]]</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=18313&oldid=prevDan Tobias at 14:46, 20 July 20142014-07-20T14:46:56Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  Some data for the second puzzle...</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  Some data for the second puzzle...</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  $EOC</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  $EOC</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">== Sample files ==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* [http://www.dan.info/sampledata/softdisk/SOKOBAN.UDF SOKOBAN.UDF]</ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Softdisk]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Softdisk]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Puzzles]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Puzzles]]</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=18307&oldid=prevDan Tobias at 12:40, 20 July 20142014-07-20T12:40:26Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{FormatInfo</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{FormatInfo</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|subcat=<del class="diffchange diffchange-inline">Text-based data</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|subcat=<ins class="diffchange diffchange-inline">Metaformats</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|extensions={{ext|udf}}, various other extensions</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|extensions={{ext|udf}}, various other extensions</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>}}</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=16240&oldid=prevDan Tobias at 21:22, 15 February 20142014-02-15T21:22:27Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|extensions={{ext|udf}}, various other extensions</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|extensions={{ext|udf}}, various other extensions</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>}}</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">'''</ins>Softdisk<ins class="diffchange diffchange-inline">''' </ins>was a publisher of diskmagazines and other software from the 1980s through the early 2000s, as well as a dialup Internet Service Provider (in the Shreveport, LA area) and web host in the late 1990s and early 2000s.  It's perhaps best known as the place John Romero, John Carmack, and other founders of Id Software were working when they started their own game-making company as moonlighters.</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Softdisk was a publisher of diskmagazines and other software from the 1980s through the early 2000s, as well as a dialup Internet Service Provider (in the Shreveport, LA area) and web host in the late 1990s and early 2000s.  It's perhaps best known as the place John Romero, John Carmack, and other founders of Id Software were working when they started their own game-making company as moonlighters.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Softdisk programs used a wide variety of file formats (text-based and binary) for loading and saving data, but at one point in the 1990s some of its developers decided to attempt to standardize the internally-created file formats for future programs, leading to a format specification they termed "UDF" (Universal Data Format, or Uniform Data Format, or Uniform Data File? Computer geeks can be pretty arrogant about regarding their own quirky data formats as being "universal" or "uniform", leading to lots of uses of the letter "U" in such acronyms).  There was an internal spec document (which I've unfortunately not been able to dig up yet, though I'm sure I had a copy at some point).</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Softdisk programs used a wide variety of file formats (text-based and binary) for loading and saving data, but at one point in the 1990s some of its developers decided to attempt to standardize the internally-created file formats for future programs, leading to a format specification they termed "UDF" (Universal Data Format, or Uniform Data Format, or Uniform Data File? Computer geeks can be pretty arrogant about regarding their own quirky data formats as being "universal" or "uniform", leading to lots of uses of the letter "U" in such acronyms).  There was an internal spec document (which I've unfortunately not been able to dig up yet, though I'm sure I had a copy at some point).</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Trivia Now</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Trivia Now</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Word Finder</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Word Finder</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">Many, but not all, of the programs using this format were of the variety of [[Puzzles|puzzle games]], making this one of the general formats existing to allow specification of data files for such puzzles, a concept done later by others with [[IPUZ]].</ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Structure ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Structure ==</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Softdisk]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Softdisk]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[[Category:Puzzles]]</ins></div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=11145&oldid=prevDan Tobias: /* Structure */2013-04-20T20:34:20Z<p><span dir="auto"><span class="autocomment">Structure</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* TRIVNOW: Trivia Now</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* TRIVNOW: Trivia Now</div></td></tr>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>There was also a "FILESPEC" chunk which had some sort of cryptic identifier that <del class="diffchange diffchange-inline">apparently had </del>something to do with indentifying what sort of file it was (but wasn't that what the "DOC" chunk did? Gee, I really have to dig up that spec sheet...).</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>There was also a "FILESPEC" chunk which had some sort of cryptic identifier that <ins class="diffchange diffchange-inline">purported to have </ins>something to do with indentifying what sort of file it was (but wasn't that what the "DOC" chunk did? Gee, I really have to dig up that spec sheet...). <ins class="diffchange diffchange-inline">(See SECRETWORD below.)</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Other chunks have program-specific data.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Other chunks have program-specific data.</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=11144&oldid=prevDan Tobias: /* Structure */2013-04-20T20:30:54Z<p><span dir="auto"><span class="autocomment">Structure</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Other chunks have program-specific data.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Other chunks have program-specific data.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>One commonly-recurrent chunk was "SECRETWORD", which <del class="diffchange diffchange-inline">contained </del>a secret word (sometimes in plaintext, sometimes encrypted) which was then output by the program when the user solved a puzzle or completed a game successfully, so that the user could send it in to qualify for some sort of contests, prizes, or something of that sort.  <del class="diffchange diffchange-inline">Obviously</del>, <del class="diffchange diffchange-inline">the plaintext secret words made cheating pretty easy, which is why encryption was eventually introduced.  Actually, now that I think about it, it's possible </del>the "SECRETWORD" chunk (whether plaintext or encyrypted) was just a "decoy" secret word to confuse potential cheaters, and the real secret word was elsewhere, perhaps in that cryptic "FILESPEC" chunk<del class="diffchange diffchange-inline">.  Pretty devious, if true... need to research this a bit more</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>One commonly-recurrent chunk was "SECRETWORD", which <ins class="diffchange diffchange-inline">purported to contain </ins>a secret word (sometimes in plaintext, sometimes encrypted) which was then output by the program when the user solved a puzzle or completed a game successfully, so that the user could send it in to qualify for some sort of contests, prizes, or something of that sort.  <ins class="diffchange diffchange-inline">In fact</ins>, the "SECRETWORD" chunk (whether plaintext or encyrypted) was just a "decoy" secret word to confuse potential cheaters, and the real secret word was elsewhere, perhaps in that cryptic "FILESPEC" chunk.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Game files sometimes had a "SCORES" chunk that was filled out with zeroes and/or dots taking up enough characters that the high scores could be written back into the file, overwriting the dummy characters but leaving the rest of the data intact if the program is well-written enough to position the writes properly.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Game files sometimes had a "SCORES" chunk that was filled out with zeroes and/or dots taking up enough characters that the high scores could be written back into the file, overwriting the dummy characters but leaving the rest of the data intact if the program is well-written enough to position the writes properly.</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=11127&oldid=prevDan Tobias at 16:08, 20 April 20132013-04-20T16:08:57Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Text-based data]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[[Category:Softdisk]]</ins></div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=2666&oldid=prevDan Tobias: Add infobox/ontology2012-11-10T18:51:08Z<p>Add infobox/ontology</p>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>{<del class="diffchange diffchange-inline">|</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>{<ins class="diffchange diffchange-inline">{FormatInfo</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|<del class="diffchange diffchange-inline">[[File Formats]]</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|<ins class="diffchange diffchange-inline">subcat=</ins>Text-based data</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">| ></del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|<ins class="diffchange diffchange-inline">extensions={{ext</ins>|<ins class="diffchange diffchange-inline">udf}}, various other extensions</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">|[[Electronic File Formats]]</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">}</ins>}</div></td></tr>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">|[[</del>Text-based data<del class="diffchange diffchange-inline">]]</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>| <del class="diffchange diffchange-inline">></del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|<del class="diffchange diffchange-inline">[[Softdisk Publishing UDF files]]</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">|</del>}</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Softdisk was a publisher of diskmagazines and other software from the 1980s through the early 2000s, as well as a dialup Internet Service Provider (in the Shreveport, LA area) and web host in the late 1990s and early 2000s.  It's perhaps best known as the place John Romero, John Carmack, and other founders of Id Software were working when they started their own game-making company as moonlighters.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Softdisk was a publisher of diskmagazines and other software from the 1980s through the early 2000s, as well as a dialup Internet Service Provider (in the Shreveport, LA area) and web host in the late 1990s and early 2000s.  It's perhaps best known as the place John Romero, John Carmack, and other founders of Id Software were working when they started their own game-making company as moonlighters.</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=2603&oldid=prevDan Tobias: cat2012-11-10T05:21:26Z<p>cat</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  Some data for the second puzzle...</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  Some data for the second puzzle...</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  $EOC</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>  $EOC</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[[Category:Text-based data]]</ins></div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Softdisk_Publishing_UDF_files&diff=2290&oldid=prevDan Tobias at 08:50, 8 November 20122012-11-08T08:50:30Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>| ></div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>| ></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>| Softdisk Publishing UDF files</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|<ins class="diffchange diffchange-inline">[[</ins>Softdisk Publishing UDF files<ins class="diffchange diffchange-inline">]]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|}</div></td></tr>
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</table>Dan Tobias Warning: require(): Unable to allocate memory for pool. in /usr/local/www/mediawiki/includes/AutoLoader.php on line 1007
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