TalkJS lets you respond to the previously written message. This allows you to comment on particular messages without confusing others:

Just like for the other builtin message actions like "edit" and "delete", you can configure which roles are allowed to reply to a message. Newly created roles will have such a setting enabled by default. Currently used roles will have this feature disabled, so if you're using TalkJS in production right now, head to the dashboard to enable replies!

Changes in REST API and webhooks

All REST API endpoints that return Message objects in the response now contain a referencedMessageId field which refers to the message referred to by a reply. Message related webhook events (message.sent, message.updated etc) now contain this field too.