122:/std/board.c (/std/board.c)
(public nomask void) set_silent(int n)
/*
 * Function name: set_silent
 * Description  : Set this to make the board silent. That means that
 *                bystanders are not noticed of people examining the
 *                board and reading notes.
 * Arguments    : int n - true if silent (default: true)
 */
