Multimodal interfaces combining, ., natural language and graphics take advantage of both the individual strength of each communication mode and the fact that several modes can be employed in parallel, ., in the text-picture combinations of illustrated documents. It is an important goal of this research not simply to merge the verbalization results of a natural language generator and the visualization results of a knowledge-based graphics generator, but to carefully coordinate graphics and text in such a way that they complement each other. .
