A method for one user to notify another user present in a chat channel. For 'pinging' other users in comments, use the [comment-replies] tag.
A method for one user to notify another user present in a chat channel.
This is available to all users that have a chat privilege and are able to post messages to the current channel. You can ping a user by prefixing their name with an @ symbol, for example
@Tim will ping a user named "Tim" in the channel you post it in, provided there is such a user.
See also section about notifications in FAQ for chat.stackexchange.com.
For the related concept of 'pinging' users in comments, which also uses the @ symbol, use the comment-replies tag.