Note that the Plan 9 team at the time were already working on Alef ( http://doc.cat-v.org/plan_9/2nd_edition/papers/alef/ ) and would later develop Limbo ( http://doc.cat-v.org/inferno/4th_edition/limbo_language/ ) as the language for the Inferno distributed system ( http://doc.cat-v.org/inferno/ )