[Not sure what the right place for this article is -- the 4QoC is definitely a Collaborative Tool, but has aspects that are important to consider as part of the General theory of collaboration... What do y'all think?] [The two-letter codes refer to the position of the quadrant: UL = Upper Left, UR = Upper Right, LL = Lower Left, LR = Lower Right. I will use these conventions from now on.] Thoughts? Comments? What do y'all think?