Editing Module:Category handler/doc (section)

=== The "categories" parameter ===

For backwards compatibility this module also understands the '''categories''' parameter. It works the same as '''nocat'''. Like this:

* If "<code>categories = false</code>" then this template does ''not'' categorize. 
* If '''categories''' is empty or undefined then this template categorizes as usual. 
* If "<code>categories = true</code>" this template categorizes even when on blacklisted pages.
* The categories parameter also accepts aliases for <code>true</code> and <code>false</code> as defined by [[Module:Yesno]], e.g. "yes", "y", "true", and 1 for <code>true</code>, and "no", "n", "false", and 0 for <code>false</code>.