Echo is a command to enable or disable communication echo in-game. When it is disabled you will only see the message "Ok." when you say something or send a tell. If you turn it on, you will see an "echo" message of what you said or the tell you've sent.

Example:

* HP:Healthy MV:Fresh > say test

Ok.

* HP:Healthy MV:Fresh > echo

Communication echo on.

* HP:Healthy MV:Fresh > say test

You say 'test'
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