Thread:JoePlay/@comment-5175866-20151202225336/@comment-171752-20151203171050

I created the template at Template:RedirectDiffer with two usage examples on the page.

Obviously, when using this template there will always be at least one alternate page. Therefore I made the second parameter required. The optional parameter is the third one that links to the Disambiguation namespace page when there are multiple alternate pages.

To further illustrate why only the third parameter should be optional: The other option is "This article is about the book, you may be looking for other uses. For the convenience of the reader, you should always provide a direct link to the most popular alternate page whenever there are multiple alternate pages.