Blending several interaction styles may be appropriate when the required
tasks and users are diverse. For example, commands can lead the user to a form
fillin where data entry is required, or menus can be used to control a directmanipulation
environment when a suitable visualization of actions cannot be
found. Also, keyboard commands can provide shortcuts for experts who seek
more rapid performance than mouse selection. Chapters 6-8 expand on the constructive
guidance for using the interaction styles outlined here, and Chapter 9
describes how input and output devices influence these interaction styles.
Chapter 10 deals with the relationship between interaction styles and collaborative
interfaces.