+/*! Return the "closest" client in the given direction */
+Client *client_find_directional(Client *c, Direction dir);
+
+/*! Set a client window to be above/below other clients.
+ @layer < 0 indicates the client should be placed below other clients.<br>
+ = 0 indicates the client should be placed with other clients.<br>
+ > 0 indicates the client should be placed above other clients.
+*/
+void client_set_layer(Client *self, int layer);
+
+guint client_xinerama_area(Client *self);
+