When using [var] in templates, it can become extremely difficult to test environment variables, when the template is used in forum headers, and we want to know what forum it is - like if we use the header to make navigation menus and such.
For the next build, the NAMESPACE variable will return the page's namespace, not the header's. Additionally, you can check the forumid by using
Code:
[var]NAMESPACE|FORUM[/var]