Board Thread:Support Requests - Designing Your Wiki/@comment-5218827-20190527110118/@comment-1038387-20190527121641

This is what you've entered. It doesn't work because Template:Timeline has only two parameters, {prev} and {next}. You'd have to change the template to something like | where prevlink is the pagename and prevtitle is the short number. Or you can choose not to include a prevtitle, just "Previous episode", which saves you a parameter.

Or if you're feeling masochistic, you can #explode the living daylights out of it to autogenerate the links from the PAGENAME.