HAS_LINK
SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
} else if (HAS_LINK(tuple->Flags)) {
HAS_LINK(tuple->Flags) = 0;
HAS_LINK(tuple->Flags) = 1;
HAS_LINK(tuple->Flags) = 1;
HAS_LINK(tuple->Flags) = 1;
HAS_LINK(tuple->Flags) = 0;