The document outlines key principles for interface design, emphasizing clarity and consistency. It highlights the necessity of each element having a clear purpose, the effective use of white space for readability, and the importance of maintaining consistent layouts, colors, and styles. Adhering to a platform's style guide is also recommended to ensure uniformity across designs.

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Principles: Clarity
• Every element in an interface should have a
reason for being there
– Make that reason clear!
• Less is more

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Principles: Clarity
• White space
– Leads the eye
– Provides symmetry and balance through its use
– Strengthens impact of message
– Allows eye to rest between elements of activity
(increases legibility)
– Used to promote simplicity, elegance, refinement

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Principles: Clarity
• White space

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Principles: Clarity
• White space

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Principles: Consistency
• Be consistent in every aspect:
• In layout, color, images, icons, typography, text
• Within screen, across screens
• Stay within metaphor everywhere
• Platform may have a style guide -- follow it!