Board Thread:Support Requests - Getting Technical/@comment-6038760-20170728171751/@comment-9605025-20180410043516

So, there are 3 ways to automatically add categories.
 * 1) Put the category links in a template and transclude that template on the pages. This, however, will not let you change the categories based on parameter input. This is the method proposed in post.
 * 2) Create the category links directly from the parameter input. However, this will allow for a virtually limitless number of different categories; most of which will not "exist". This is the method you and I are talking about in posts and.
 * 3) Create category links depending on the outcome of parser functions acting on parameter input. This will allow you to restrict it to "existing" categories.
 * 4) You can use  to detect whether or not a parameter has been given a value. For example, if you want to label all pages that need an image:
 * 5) You can use  to detect whether or not a parameter has been given a specific value. For example, if you want to distinguish between humans and machines:.
 * 6) You can use  to detect which of multiple possible values a parameter has been given. For example: