Hello,<br><br>If it's only the api you mean by documentation, have a look on <a href="http://trac.openlayers.org/wiki/NaturalDocs">http://trac.openlayers.org/wiki/NaturalDocs</a> for building your documentation. For the examples code, it's in the openlayers release.<br>
For mirroring website, winhttrack or httrack (depend of your OS), in command line, wget recursive.<br><br>Regards<br><br>ThomasG<br>Gis Specialist<br><br>