PlusDock uses two main categories of windows: Document windows and Tool windows. Their classification comes from their general usage: document windows will typically host editable documents, like multi-line text boxes, while tool windows will typically host various controls that allows the user to interact with the application. Each window can hold any number of pages. Each page is linked to a Tab or Selector. Any page can be moved between the same type of window, can become an independent window itself, or can become a top window. This allows the groupping of similar controls on pages and groupping those pages as it logically makes sense, under a common window.

	Tool windows Document windows