I added a simple online editor into WebChart program, to provide better online support or perform online development, else you must login to the WebChart application server and replace the updated WCML files, it's not so flexable to perform editing on running system, but now the simple online editor can help you to perform remote operation.
Open you web borwser and input the following URL.
http://localhost:8080/webchart/<path>/edit.do
If you haven't login, you will see a page as following.
Click the login link, you will see a login page as following. You must login as a user with "EDITOR" role (WebChart Security).
After sucessful login, you will get the simple editor page. Select the pages to edit by click the WCML file name, and them save it to confirm the change.
I am not sure whether it's useful for online support.