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edit
Changes
m
(remove extra spaces if you copy and paste)
<?xml version="1.0" encoding="UTF-8"?> <RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#">
</RDF>
→addtabbeside/
The second metadata file we need to create is '''addtabbeside/install.rdf'''. This is an [http://developer.mozilla.org/en/docs/Install_Manifests install manifest] that tells the Firefox add-on manager how to install the extension, with information like who wrote it, the version number, compatibility information, etc.
<pre>
<Description about="urn:mozilla:install-manifest">
</Description>
</pre>
