Tours will be displayed on any page whose URL matches this value.

You can use the % character as a wildcard to mean anything.
Some example values include:

* /my/% - to match the Dashboard
* /course/view.php?id=2 - to match a specific course
* /mod/forum/view.php% - to match the forum discussion list
* /user/profile.php% - to match the user profile page

If you wish to display a tour on the site home, you can use the value: "FRONTPAGE".