Post something nasty, delete it an hour later — and the conversation looks like nothing ever happened. Now you can only erase while the trail is still warm.
Five minutes for yourself — your own message can be edited or deleted right after sending: a typo, the wrong channel. After that — through a moderator
Editing doesn't rewrite the past — the previous text is kept, and moderators see the whole chain
Deleted isn't gone — it disappears from the chat but stays in the moderation log, text and all
Report a message — a button next to someone else's line: we look into it and tell you whether action was taken or nothing was found
Your own chat log — world and fandom owners now have a moderation section covering every channel
You can report quietly: the author never learns who did it.