DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
When a link supplies a long prompt that exceeds the viewport height, users now see a character count and explicit scroll instruction: "The prompt below ({N} chars) was supplied by the link — scroll to review the entire prompt before pressing Enter."
Evidence
Long prompt display (search for "scroll to review the entire prompt")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.