The chapters in this book are revised, updated, and edited versions of 13 selected papers from the Second International Conference on Cooperative Multimodal Communication (CMC’98), held in Tilburg, The Netherlands, in 1998.This wasthesecondconferencein a series,ofwhichthe ?rstonewasheld inEindhoven,TheNetherlands,in1995.Threeofthesepaperswerepresentedby invitedspeakers;thosebyDoniaScott(co-authoredwithRichardPower),Steven Feiner (co-authored with Michele Zhou), and Oliviero Stock (co-authored with Carlo Strapparava and Massimo Zancanaro). The other ten were among the submitted papers that were accepted by the CMC’98 program committee. The editors contributed an introductory chapter to set the stage for the rest of the book. We thank the programcommittee for their excellent and timely feedback to the authors of the submitted papers, and at a later stage for advising on the contents of this volume and for providing additional suggestions for improving theselectedcontributions.Theprogramcommittee consistedofNicholasAsher, NormannBadler,DonBouwhuis,HarryBunt,WalthervonHahn,DieterHuber, Hans Kamp, John Lee, Joseph Mariani, Jean-Claude Martin, Mark Maybury, PaulMcKevitt, RobNederpelt, KeesvanOverveld,RayPerrault,Donia Scott, Jan Treur, Wolfgang Wahlster, Bonnie Webber, Kent Wittenburg, and Henk Zeevat. WethanktheRoyalDutchAcademyofSciences(KNAW)andtheOrga- zationforCooperationamongUniversitiesinBrabant(SOBU)fortheirgrants that supported the conference.