... modality-independent. For example, the in- put in Figure 2 could equally well have been the usersimply pointing to a design on the screen, with nospeech at all. This would have resulted in the ... The same princi-ple holds for error handling, which is implementedat different levels in our approach. In the guided-browsing phase of the COMIC sys-tem, the user may browse tiling designs ... used in bathroom sales situa-tions to help clients redesign their rooms. The inputto the system includes speech, handwriting, and pengestures; the output combines synthesised speech, atalking...