GRID_FLAG_CLEARED
int flags = (gc->flags & ~GRID_FLAG_CLEARED);
if ((flags1 & ~GRID_FLAG_CLEARED) != (flags2 & ~GRID_FLAG_CLEARED))
{ { ' ' }, 0, 1, 1 }, 0, GRID_FLAG_CLEARED, 8, 8, 8, 0
{ .data = { 0, 8, 8, ' ' } }, GRID_FLAG_CLEARED
gce->flags = (gc->flags & ~GRID_FLAG_CLEARED);
if (gc->flags & GRID_FLAG_CLEARED)