We propose realizing communicative plans in graphics by mapping the communi
cative goals to conceptual tasks and then using the task-based graphic desi
gn to select graphical techniques. The mapping rules are presented in three
dimensions: data aggregation and selection, task synthesis, and task aggre
gation. Those rules have been incorporated in AutoBrief, a research system
for multimedia explanation. (C) 2001 Elsevier Science B.V. All rights reser
ved.