Chris Jarvis and Jack Peck provided guidance and support of this project. Programmers included Sarat Vemuri (whose original ideas helped produce the first prototype of the arrow tool);
Venkat Buduma (who improved the arrow tool);
and Kalyan Sundhar (who produced the on-line flow diagram). Shankar Sengupta and Vivek Naiknavare helped conduct experiments. This work was partially supported by National Science Foundation Grant IRI-8900354;