Percent Substitution

I
n order to make the generation of URLs easier, the website has a mechanism for generating URLs automatically from short 'keys'. This mechanism is called percent substitution or URL substitution. See the list of keys.

Creating URLs this way has several advantages. First, it saves programmers and writers from writing out often lengthy URLs. Second, the URL generator is smart enough to generate URLs for the current virtual host. Third, when users are logged in and using SSL, all URLs must have https:// at the beginning; the URL generator is smart enough to take care of that, too.