The ConferenceRoom Chat Server has a setting which forces the server to echo messages typed by a user back to him. This may be useful to give the user an idea of the latency between himself and the server. However if that setting is used, the client will display the user's message twice. Setting nolocalecho=true will cause the Java client to only show the message that was echoed by the chat server.
Examples:
In a web page:
<param name="nolocalecho" value="true">
In a param file:
nolocalecho=true