* its value will be replaced with the WAYLAND_DISPLAY environment
* variable if it is set, otherwise display "wayland-0" will be used.
*
+ * If WAYLAND_SOCKET is set, it's interpreted as a file descriptor number
+ * referring to an already opened socket. In this case, the socket is used
+ * as-is and \c name is ignored.
+ *
+ * If \c name is a relative path, then the socket is opened relative to
+ * the XDG_RUNTIME_DIR directory.
+ *
* If \c name is an absolute path, then that path is used as-is for
* the location of the socket at which the Wayland server is listening;
* no qualification inside XDG_RUNTIME_DIR is attempted.