The MDN community sometimes is tasked with large documentation projects—that is, large amounts of documentation to be written or edited about a specific topic, or a large maintenance project to existing content. Such projects are framed as "epics" in MDN's agile process. Efforts that support an Objective and quarterly Key Result have a project summary document (linked from the wiki page).
Major content areas on MDN are also tracked on a doc status page for the project. To learn more about ongoing documentation projects, see the doc status overview.