IUI 2002
	Structure
	Motivations
	Related Work
	Redliner
	Experiments
	Space Pen
	Conclusion
	End

SPACE PEN

Navigation problem
New navigation process (Doom like)

Different way to annotate
Text + drawing (with symbol recognition)

Add, suggest changes
By sketching on the model in 3D

Orientation problem
Add floor plan with user location

... Demo