Welcome to the NavDaF demonstration!
This directory with its files and subdirectories (and their files and subdirectories) is an example of what capabilities NavDaF has and what configuration directives you may use in the configuration file. But - this is only a demonstration with examples. It does not cover all of NavDaF capabilities and all of NavDaF configuration directives.
NavDaF is intended for webdevelopers and/or php programmers. Therefore you should have a (more ore less) intense look at the documentation and the configuration file!
For demonstration purposes have a look to