void attach(Client *c); /* attaches c to global client list */
void configure(Client *c); /* send synthetic configure event */
void detach(Client *c); /* detaches c from global client list */
-void focus(Client *c); /* focus c, c may be NULL */
-void focustopvisible(void); /* focus top visible window on stack */
+void focus(Client *c); /* focus c if visible && !NULL, or focus top visible */
void killclient(const char *arg); /* kill sel nicely */
void manage(Window w, XWindowAttributes *wa); /* manage new client */
void resize(Client *c, int x, int y,