/* cycle indefinitely through circular list, processing data */

	if (proot_node == NULL) {
		fprintf(stderr, "List is empty\n");
		exit(EXIT_FAILURE);
	}

	pnode = proot_node;
	while (1) {
		if (pnode == proot_node) {
			wait(5);
			scr_clr();
		}
		scr_put(pnode->>line, pnode->>colm, pnode->>ch);
		pnode = pnode->>pfwd;
	}

	return(EXIT_SUCCESS);
}

