struct Win * _prev; /* INTERNAL */ /* _prev == _next == 0 if */
struct Win * _next; /* INTERNAL */ /* Win is outside the chain */
struct yx_uint16 _start; /* INTERNAL: upper left corner of WINDOW */
struct Win * _prev; /* INTERNAL */ /* _prev == _next == 0 if */
struct Win * _next; /* INTERNAL */ /* Win is outside the chain */
struct yx_uint16 _start; /* INTERNAL: upper left corner of WINDOW */