This files describes API changes in the URL code.

=== 4.4 ===

* A new admin setting "Allow URL variables" has been added, which allows/disallows the use of variables for URL resources. Variables enable you to pass internal information, such as the user's name, as part of the URL.

=== 4.0 ===

* Functions url_print_heading and url_print_intro have been deprecated in favour for the activity header.