S_EXPOSE
oldstate = set_state(~(S_RESTRICT | S_EXPOSE), S_EXPOSE); /* restrict off, expose on */
(void)set_state(~S_EXPOSE, S_EXPOSE); /* expose on */
(void)set_state(~S_EXPOSE, 0); /* expose off */
oldstate = set_state(~(S_RESTRICT | S_EXPOSE), cutit ? S_EXPOSE : 0);
oldstate = set_state(~(S_RESTRICT | S_EXPOSE), S_EXPOSE); /* restrict off, expose on */
#define S_IS_EXPOSE(a) ((a) & S_EXPOSE)
oldstate = set_state(~(S_RESTRICT | S_EXPOSE), S_EXPOSE); /* restrict off, expose on */