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2. Dialogue
2.1 Principle
2.1.1 Expressing orders by direct designation
Dialogue in direct-designation graphical user interfaces must be machine-guided: the user can only designate what the machine shows. The machine therefore always has the initiative. It must offer, in an accessible, organized and visual way, all the choices the user can make at a given moment.
These choices are suggested by interactors, mainly buttons, icons and menus, but there are many others. For the interface designer, the decision...
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Dialogue
Main metaphors
