Uid
if ((fmt & 1) == 0 && (Uid(w) & 2))
if ((fmt & 1) == 0 && (Uid(w) & 1))
if ((dfmt & 1) == 0 && (Uid(w) & 1))
if ((fmt & 1) == 0 && (Uid(w) & 1))
register u_int uid = Uid(w);
#define Fpi(w) (Uid(w)>3)