<?xml version="1.0"?><RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"     xmlns:em="http://www.mozilla.org/2004/em-rdf#">  <Description about="urn:mozilla:install-manifest">    <em:id>inspector@mozilla.org</em:id>    <em:version>1.8.1.19</em:version>    <em:targetApplication>      <!-- Firefox -->      <Description>        <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>        <em:minVersion>2.0.0.19</em:minVersion>        <em:maxVersion>2.0.0.19</em:maxVersion>      </Description>    </em:targetApplication>    <em:targetApplication>      <!-- Thunderbird -->      <Description>        <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>        <em:minVersion>2.0.0.19pre</em:minVersion>        <em:maxVersion>2.0.0.19pre</em:maxVersion>      </Description>    </em:targetApplication>    <em:targetApplication>      <!-- Sunbird -->      <Description>        <em:id>{718e30fb-e89b-41dd-9da7-e25a45638b28}</em:id>        <em:minVersion>0.9pre</em:minVersion>        <em:maxVersion>0.9pre</em:maxVersion>      </Description>    </em:targetApplication>    <!-- EXTENSION AUTHORS!         DO NOT COPY THIS PROPERTY INTO YOUR INSTALL RDF FILES         It will cause users not to be informed of incompatibilities          with your extension when they are updated with Software Update         and your extension will become unavailable to them!         -->    <em:appManaged>true</em:appManaged>    <!-- front-end metadata -->    <em:name>DOM Inspector</em:name>    <em:description>Inspects the structure and properties of a window and its contents.</em:description>    <em:creator>mozilla.org</em:creator>    <em:homepageURL>http://www.mozilla.org/projects/inspector/</em:homepageURL>  </Description></RDF>