Explain a Diff

Adapted from Geoffrey Litt's explain-diff prompt (gist.github.com/geoffreylitt/a29df1b5f9865506e8952488eac3d524), with the fixes its comment thread asked for: a quiz whose answers are shuffled and audited by a script, untrusted diffs handled as data, and a fixed template so each run spends tokens on the explanation instead of CSS.

Options

Read these from the user's request. Defaults in bold.

• Format: html or md. Markdown costs the fewest tokens; HTML gives styled diagrams and a clickable quiz.
• Quiz: page (multiple choice on the page) or chat (no quiz on the page; ask free-response questions in the conversation afterwards and grade the answers). none skips it.

Boundary