Static website generators often transition content from markdown to HTML without advancing document representation, leading to limited output capabilities. Original tools like JupyterBook initially wrapped around Jekyll, which simply converted markdown blobs to HTML. This lack of an intermediate rich document model hampers features such as cross-referencing, bibliographic entries, and labeling for figures and equations. Incorporating a robust document model significantly enhances the power and complexity of systems like Sphinx, making markdown serve merely as a user-friendly façade for engaging with these more capable ecosystems.