Internally, Sculpin uses an event-driven architecture to perform its tasks. These events are fed into Sculpin's Converters, Formatters, and Generators at various stages of the lifecycle.
Converters convert incoming markup to something else, generally HTML. Sculpin ships with two converters, Markdown and Textile.
Formatters are responsible for formatting sources. This can be considered a view or template layer.
Sculpin ships with one formatter, Twig.