This is needed for some good reasons (rolling back) and also for less good reasons (user habits).</p>
<a name="Identity.of.installed.files"></a>
<h2>Identity of installed files</h2>
This is needed for some good reasons (rolling back) and also for less good reasons (user habits).</p>
<a name="Identity.of.installed.files"></a>
<h2>Identity of installed files</h2>