checking out the code

As I have allready told you, the first thing you do is to check out the Source.
You can do this either as an anonymous user in read-only mode via: svn checkout https://open.datacore.ch/read-only/orxonox+footnotemark orxonox

Or if you have a registered username and a password: svn checkout https://open.datacore.ch/pw/orxonox orxonox Be sure to accept the certificate, and if you like, to save the authentication information.