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		<title>ARJ-PROTECT data - Revision history</title>
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		<updated>2026-04-23T15:25:22Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=ARJ-PROTECT_data&amp;diff=42703&amp;oldid=prev</id>
		<title>Jsummers: Created page with &quot;{{FormatInfo |formattype=electronic |subcat=Error detection and correction |extensions={{ext|xrj}}, {{ext|x01}}, ... |released=1995 (beta), 1996 }} '''ARJ-PROTECT data''' is e...&quot;</title>
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				<updated>2022-05-28T16:50:22Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{FormatInfo |formattype=electronic |subcat=Error detection and correction |extensions={{ext|xrj}}, {{ext|x01}}, ... |released=1995 (beta), 1996 }} &amp;#039;&amp;#039;&amp;#039;ARJ-PROTECT data&amp;#039;&amp;#039;&amp;#039; is e...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{FormatInfo&lt;br /&gt;
|formattype=electronic&lt;br /&gt;
|subcat=Error detection and correction&lt;br /&gt;
|extensions={{ext|xrj}}, {{ext|x01}}, ...&lt;br /&gt;
|released=1995 (beta), 1996&lt;br /&gt;
}}&lt;br /&gt;
'''ARJ-PROTECT data''' is error correction data associated with the ARJ-PROTECT feature of the [[ARJ]] archive format.&lt;br /&gt;
&lt;br /&gt;
It is typically created using a command like &amp;lt;code&amp;gt;ARJ a -hk ...&amp;lt;/code&amp;gt;. File repair is invoked with &amp;lt;code&amp;gt;ARJ q ...&amp;lt;/code&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
ARJ-PROTECT first appeared in ARJ 2.55, which puts the data in a companion '''.XRJ''' file. At v2.63(?), the feature was changed to instead append the data to the ARJ file.&lt;br /&gt;
&lt;br /&gt;
The feature presumably also exists in all versions of ARJ32, with the format change happening at v3.02.&lt;br /&gt;
&lt;br /&gt;
For documentation, refer to the &amp;quot;ARJ-PROTECT DATA PROTECTION FEATURE&amp;quot; section of the ARJ.DOC/ARJ.TXT file from a suitable version of ARJ.&lt;br /&gt;
&lt;br /&gt;
== Identification ==&lt;br /&gt;
XRJ appears to be a raw data format, with no way to identify it from its contents.&lt;br /&gt;
&lt;br /&gt;
For an ARJ file containing such data, the 0x08 bit is set in the flags byte at offset 8.&lt;br /&gt;
&lt;br /&gt;
== Software ==&lt;br /&gt;
* ARJ and ARJ32 - Refer to [[ARJ#Software]].&lt;/div&gt;</summary>
		<author><name>Jsummers</name></author>	</entry>

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