A non-web document applies WCAG 2.1 guideline 1.4: no colour-only cues, control of audio that plays, minimum contrast for text and graphics, text resizing, avoidance of images of text, reflow and text spacing where the format has no essential fixed layout, and dismissible hover content.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.