and boot you computer from the CD, or install a free emulator like <a
href="http://virtualbox.org">virtualbox</a> and boot a virtual
machine from the CD image. Virtualbox is available for Mac OS X,
- Windows and Linux.<br/>
+ Windows and Linux. A short guide to VirtualBox is part of the
+ <a href="docs/manual/html">Matita manual</a><br/>
</dd>
<dt>.deb package</dt>