static void r_delete(RSET ct);
static int r_read_and(RSFD rfd, void *buf, TERMID *term);
static int r_read_or(RSFD rfd, void *buf, TERMID *term);
static void r_delete(RSET ct);
static int r_read_and(RSFD rfd, void *buf, TERMID *term);
static int r_read_or(RSFD rfd, void *buf, TERMID *term);