WebDAV servers support link actions by allowing clients to create, modify, and delete links between resources. This is achieved using the WebDAV “link” header or the “DAV:link” XML element, which contain the URI of the target resource and other metadata such as the link type and rel attributes.
WebDAV servers can also support link actions by providing additional operations like PROPFIND, PROPPATCH and COPY, and MOVE, which can manipulate link properties and move or copy linked resources. The LINK and UNLINK methods can also be used to create and remove links directly.
Overall, WebDAV servers support link actions in a flexible and extensible manner, allowing clients to create and manage a wide range of links between resources.