Checked that the code, the proofs, and the specifications hold.
A technical reviewer checks a teaching resource against something it must match, like the source text, an answer key, a derivation, or a platform specification. They run the code, re-derive solutions, and compare figures to the underlying data. Out of that comes an error log, a validator result, or a conformance table. Work arrives from authors and compilers, with subject experts supplying what counts as correct. Findings pass to the editors who make changes, and then to the technical editor. This trade contributes the checked comparison.