Small documentation changes

Signed-off-by: Rogiel <rogiel@rogiel.com>

src/main/java/com/l2jserver/service/game/chat/PublicChatChannel.java

@@ -16,10 +16,16 @@
  */
 package com.l2jserver.service.game.chat;
 
+import com.l2jserver.model.id.object.CharacterID;
+
 /**
  * An public {@link ChatChannel}. Please note that the concept of "public" does
  * not mean it is available to anyone, but there are more than 2 player chatting
- * (i.e. clan, global, region, etc...)
+ * (i.e. clan, global, region, etc...). That mean that a single message can be
+ * broadcasted to more than a single client. Note that even in a public channel
+ * only a single event
+ * {@link ChatChannelListener#onMessage(ChatChannel, CharacterID, String)} will
+ * be dispatched per listener.
  * 
  * @author <a href="http://www.rogiel.com">Rogiel</a>
  */