projectdoc documents are defined by properties and sections. A section is typically defined by the Section Macro. Such sections can be referenced, but require the fragment identifier to do so. In order to modularize a document, sections can be added by the use of the Section Doctype and transcluded by a transclusion macro – either one-by-one using the Transclusion Macro or the Transclude Documents Macro. The section documents are typically stored as child documents to the transcluding document. Therefore the Transclude Documents Macro allows to create a document divided into section documents easily. In addition to that these section documents ca be referenced more easily.

The Topic Doctype is used to document a topic. In contrast to the Section Doctype the topic is a document on its own. In contrast to the Module Doctype the topic's main purpose is not designed primarily for reuse. Use the Tour Doctype to organize topics in a single document.