Conveniently, this extends to viewing as well. When given a chance, people will scroll content to the middle to read it. When not given a chance, they still try to scroll a few times before giving up, and tend to read content at the end of the page more quickly, skip entries or miss functions they cannot center in long lists.
Follow the the classic mobile pattern of list views and put your main content and interaction in the middle of the page. Provide padding to scroll the end of content towards the middle, and make sure menu bars, tabs, and status displays and action items on the top or bottom are secondary.
References
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