Mark Callow, President of Edgewise Consulting, specializes in digital media and the world-wide web. He was with Silicon Graphics for 11 years where initially he was responsible for the 4Sight window system. Subsequently, he created the famous CDman & DATman media player & recording applications and designed InPerson, a collaborative desktop video conferencing system. His most recent assignment was with Cosmo Software where he worked on VRML animation and was their liaison to the MPEG-4 standards committee. He founded the VRML Color Fidelity Working Group and is also Past Co-Chair of the VRML Streaming Working Group. Mark graduated from the University of Newcastle Upon Tyne, England. and has a Master's degree from Clarkson University. When not working, Mark enjoys travelling and getting to know other cultures. He has circumnavigated the globe twice and speaks French and Japanese.