In reading order below. These pages are explanation — the unedited output they describe is published separately as worked examples.
The definition, precisely: one row per destination field, stating source, rule, evidence, and open questions — plus one real populated row and the three things an STTM is not.
The columns that keep the document honest, the six steps that produce one, and two real rows from a published run — a checkable mapping and an honest gap.
Excel is the right review medium and the wrong system of record: the five ways workbooks break in review, and the round-trip rules that survive them.
Why confidence scores alone mislead, why a suggestion that rests on a rule needs the verbatim line behind it, and why abstention must be a first-class output.
The deliverable every guide circles back to is the same one: a source-to-target mapping document a reviewer can actually check. The guides describe it; the template and the examples are it.