Stages run left to right. A request moves through up to six stages. Most stop early or pass quickly through stages that do not apply.
Rails across the top are always on. Broad safety (S), disposition (F), ethics under uncertainty (G), heuristics (H) and the cross-lane rules (X) shape every stage. They are not steps in a sequence.
Naming. A rule ID is its lane letter plus a number, for example E3 is the third rule in Lane E. X1 to X11 are cross-lane rules. ST1 to ST6 are stages. OUT:... are outcomes. IDs are never reused: H5 and the old tree-only IDs were retired, not recycled.
No numeric weights. The constitution gives no numbers, so this version shows none. Labels appear only where the document's own wording supports them. Hover a badge to see its basis.
Every quote is exact. The quote in the detail panel appears word for word on the cited page, checked by tools/validate_quotes.py.
Keys. Left and right arrows step through a walkthrough. Esc resets it. / jumps to search.
Links. Add a walkthrough ID to the address to open it directly, for example index.html#W3. With no ID, walkthrough 2 opens, ready to play.