It is a closed format created by Wolfram Research.

The largest high technology employer is Wolfram Research, with more than 400 employees in Champaign.

In 2007 he was given a Leibniz Medal by Wolfram Research.

In 1993, he interned at Wolfram Research, who were the developers of Mathematica.

MathWorld - a proprietary system hosted at Wolfram Research.

In 1987 he co-founded a company called Wolfram Research which continues to develop and market the program.

This resulted in a legal affair based on a non-disclosure agreement with Wolfram Research.

In 1990, Cook went to work for Wolfram Research, makers of the computer algebra system Mathematica.

He currently works for Wolfram Research, Inc.

The work has been compared with other publishers' electronic textbook experiments, including Wolfram Research.