A.: It shows customized messages of death causes in the chat when someone dies.
Q.: How can I change the messages?
A.: You have to go to the /plugin/DeathInChat/config.yml and there you have all the messages that can be customized in the plugin version.
Q.: Can I use any language?
A.: No. If you type any character NON-UNICODE, it will show a different character. P.E.: if you type a ł, it will show a Ǡ. It is caused because of bukkit typing limitations.