Excerpt from Apple’s iPad Human Interface Guidelines:

Focus on providing a consistent experience in all orientations, even if the layout of secondary information might change. A comparable experience in all orientations allows people to maintain their usage patterns when they rotate the device.

Screenshots from Apple’s Pages for iPad application:

Horizontal:

Vertical:

Not exactly maintaining my usage patterns.

Also: Why does the guideline text render so horrendously on iPad? And how come I can’t copy from it? Someone should inform Apple that actions speak louder than words.

Questions or comments? Let me know: @eierund on twitter.