Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] [Y] [Z] laptop computers latches Laurel, Brenda laws of interaction design digital object manipulation feedback and feedforward Fitts' Law Hick's Law Magical Number Seven rule Moore's Law Poka-Yoke Principle Saffer's Law Tesler's Law 2nd layers layout grid systems visual flow leading, typographic Lego Mindstorms life goals line length linear flows list boxes LiveJournal tool long-term orientation ludic |