Retired Documentation: You are using the documentation for version 1.7.3 which was retired in 2013. Go here for the latest version documentation or check here for your available upgrades to the latest version.
Wiki Module v. 1.1
* Released with ExpressionEngine 1.5Namespace Support Added
Namespace was added to this version. Please read the documentation on Setting up Namespaces for more information. Also, you will have to update your default theme to the new version or, if you have modified your wiki theme, you will have to follow the Wiki Theme update instructions for ExpressionEngine 1.5.