I am new to Silverstripe Framework / CMS. I see `./mysite/code/Page.ss` as controller and `./themes/simple/...` as template directory. I logged into the admin panel and added new "test" page. The menu appears on the website with the URL `http://example.com/test` and content is displayed.
So what I want to know is, how to access the new controller let say `Download.ss`. I want to access the URL `http://example.com/download/123/` without adding the new page `download` in admin panel. Thank you.