VUF_ADDED
vu->flags |= VUF_ADDED;
if ((vu->flags & VUF_ADDED) == 0)
vu->flags &= ~VUF_ADDED;
if ((views[i].flags & VUF_ADDED) && &views[i] != vu &&
vu->flags &= ~(VUF_ADDED|VUF_DISPLAY);
vu->flags |= VUF_ADDED;
if ((vu->flags & VUF_ADDED) == 0)
vu->flags &= ~VUF_ADDED;
if ((views[i].flags & VUF_ADDED) && &views[i] != vu) {
vu->flags &= ~(VUF_ADDED|VUF_DISPLAY);