void help_open(screen_t *screen, mpd_client_t *c);
void help_close(screen_t *screen, mpd_client_t *c);

void help_paint(screen_t *screen, mpd_client_t *c);
void help_update(screen_t *screen, mpd_client_t *c);

int  help_cmd(screen_t *screen, mpd_client_t *c, command_t cmd);