[Don Norman is an Apple Fellow and former vice president of Apple's Advanced Technology Group, perhaps best known in Macintosh circles as Apple's "User Experience Architect" and the author of The Design of Everyday Things and other key works of user design. He is currently the president of UNext Learning Systems. (Nov-99)
Constant Dictionary Definitions
If you hold down Command-Control-D in a Cocoa-based application that supports AppleSpell, you'll see little dictionary pop-ups for each word that you mouse over. Neat, eh?