A comment signal is a marker or convention that tells a pull-request author whether feedback requires a change. It removes guesswork, helps authors focus on blocking comments, and lets them confidently close informational ones. Teams can choose a lightweight signal vocabulary or adopt a more formal system. section 6.1.2 section 6.4
Make the requested action unmistakable
needs change: This is importing the wrong module 'ts/widgets'. It should be importing 'ts/components'.
MoSCoW comments provide another option: prefix feedback with M:, S:, C:, or W: for Must, Should, Could, or Would. Must blocks approval; Should requires a reason to ignore and reviewer agreement; Could is optional; Would expresses personal preference or educational guidance. Teams should experiment with the system, because boundaries between categories may prove too blurry.
A signal works best when it accompanies a clear, objective request and its rationale. Pairing the marker with context makes the intended outcome easier to understand and less likely to sound like personal preference. section 6.2 section 6.4
