These posts, taken in order, demonstrate the Drupal topic map module's functionality; they are also the basis for regression testing. Posts have PRECONDITIONs, which document what has to be true if the expected POSTCONDITIONs are to occur.

The Drupal topic map module uses a simple, wiki-like [[ ... ]] syntax to enter associations between topics in post data. Like a wiki, this topic map application is data-driven, but the syntax is richer, and the functionality is far greater. Here is a topic map association as entered: