So basically when Tridge &quot;reverse engineered&quot; BK, he basically reimplemented SCCS?<p><a href="https:&#x2F;&#x2F;lwn.net&#x2F;Articles&#x2F;132938&#x2F;" rel="nofollow">https:&#x2F;&#x2F;lwn.net&#x2F;Articles&#x2F;132938&#x2F;</a>