# Discussion Learner comments, replies, reactions and moderation - [Read an activity's comments](https://headless-lms.dev/docs/api/discussion/listActivityComments) - [Post a comment or reply on an activity](https://headless-lms.dev/docs/api/discussion/postComment) - [Revise your own comment](https://headless-lms.dev/docs/api/discussion/editComment) - [Delete a comment](https://headless-lms.dev/docs/api/discussion/deleteComment) - [Withdraw your reaction from a comment](https://headless-lms.dev/docs/api/discussion/clearCommentReaction) - [Set your reaction to a comment, replacing any you already had](https://headless-lms.dev/docs/api/discussion/setCommentReaction) - [Flag a comment for moderator attention](https://headless-lms.dev/docs/api/discussion/reportComment) - [List comments, filtered by course, activity, author, status or reports](https://headless-lms.dev/docs/api/discussion/listComments) - [Publish a comment: approves a pending one, restores a removed one](https://headless-lms.dev/docs/api/discussion/publishComment) - [Remove a comment as a moderator](https://headless-lms.dev/docs/api/discussion/moderateRemoveComment) - [Dismiss every open report on a comment](https://headless-lms.dev/docs/api/discussion/dismissCommentReports) - [Reply to a comment from the moderation queue](https://headless-lms.dev/docs/api/discussion/replyToComment)