In other words, take two or more words, capitalized, and write them out without spaces.
Any word entered like this will become a link.
If the link is defined, it appears underlined
Like This. Clicking on links
Like This takes you to the appropriate page.
If the link is not defined, it appears
With A Question Mark. Clicking on the question mark creates the appropriate page and allows you to edit it (but don't do that here, or you'll ruin the example!)