👍: This is great!❔: I have a question / can you clarify?❌: This has to change.🔧: This is a well-meant suggestion. Take it or leave it.🙃: This is a nitpick. It shouldn’t block moving forward.💭: I’m just thinking out loud here. Something doesn’t necessarily have to change, but I want to make sure to share my thoughts.🤡: This is a complaint about something with no obvious answer, not necessarily a problem originating from changes.
Reference: How We Do Code Review