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you can also use /loadui user/whatever.xml
Enable the Debug Console
You can enable a basic development debug console enabling an additional line in the actions.xml. Your client should be build with FINAL_VERSION off in order for this to work. To determine what version your client is look in the upper right corner during loading. If you see an FV then you are in FINAL_VERSIOL, otherwise you should see DEV for development or debug.
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