Purity is a specialized wiki engine built in PHP, with the purpose of creating a minimalistic platform for complex, interwoven networks of data.
Purity allows for elaborate connectivity between its object-based data structures (made easily accessible from a user standpoint with the help of Apache's URI rewriting system), intuitive writing as a result of its multi-layered parser, and generalized usage due to its functional usage as a content management system, and even a text-based game engine.
Its markup language is based on a simple syntax. It contains attributes, which are declared through the attribute name, followed by a colon, and the information to be attributed to said attribute.
And it contains rules, which are inline elements used to format text according to predetermined functions.