Through a study of web site design practice, we observed
that web site designers design sites at different levels of
refinement--site map, storyboard, and individual page--
and that designers sketch at all levels during the early stages
of design. However, existing web design tools do not
support these tasks very well. Informed by these
observations, we created DENIM, a system that helps web
site designers in the early stages of design. DENIM
supports sketching input, allows design at different
refinement levels, and unifies the levels through zooming.
We performed an informal evaluation with seven
professional designers and found that they reacted
positively to the concept and were interested in using such a
system in their work.