Each project has a start article, the article that is displayed first when the project is opened and can be called up at any time via "Home" in the "Start" menu bar.
The start page can be used in a variety of ways: to open important articles directly via links, to give an introduction to the meaning and purpose of the project or, or...
To define an article as a start page, use the context menu via the right mouse button in the Index or the Outline, e.g.