Comb is a modular weblog/website engine. A Comb site consists a single *database*, accessed through multiple *interfaces*: - Web interface - Atom/RSS interface - Administration interface - XML-RPC interface These are all interfaces to the underlying database. They are implemented in Comb as Ruby classes, all of which inherit from a super-class, which serves as a general-purpose interface to the database. Comb is customized and extended by editing the interfaces. For example, the web interface replaces the "themes" characteristic of most other content management systems.