Annex A is informative and shows seven ways to reveal help in layers: content preview, accordion panes, sliders, a hamburger icon, a wizard and advanced settings. Annex A is the practical companion to the progressive disclosure principle in clause 5.4. It collects seven techniques, each named plainly: a content preview, accordion panes, sliders, the hamburger icon, a wizard and advanced settings. The annex is informative, so it does not create a separate obligation. Its value is in the choice it forces. A content preview helps a person decide whether to read on. An accordion keeps a long answer inside a short screen. A slider moves through a range or a sequence. The hamburger icon opens a longer menu and needs a label. A wizard carries a long or risky task in steps. Advanced settings keep the deeper options out of the first view. The annex does not say that every technique is right for every app. It gives a vocabulary for a design review.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.