To add a new language pack, you should add new <language> section to main.xml file. For example, you want to add German language:
<language id="de" name="Deutsch" url="{ROOT}videochat/languages/lang.de.xml" /> |
Then create videochat/languages/lang.de.xml file which contains the translation of all the messages to German, for example:
<language id="de" name="Deutsch"> <!-- main --> |