A WikiNamespace holds a collection of WikiTopics. In particular, it provides a name "scope" for all of the topics it contains. In other words, all topics are named uniquely within their WikiNamespace. You can have two topics with the same name only if they are in different namespaces.

See [[http://www.flexwiki.com/default.aspx/FlexWiki/WikiNamespace.html]] for more details and examples