Modified HTTP Methods

The existing HTTP methods modified by WebDAV are:

DELETE

The method exists is defined by the original HTTP specification to delete a file or a single resource on the server. Now it is extended to delete collections as well;

PUT

Extended to support locking of a resource - if a resource is locked by a given author, then depending on the type of lock, no other auhtor will be allowed to change that resource;

OPTIONS

Extended to list the capabilities of the WebDAV server in the DAV header.