Headings do not collapse on my iOS Paper. A strange omission, since navigation on a small screen and using a device away from a desk are two reasons why good navigation and collapse/expand headings are most needed.\ My desktop Paper has excellent navigation via a ToC that appears at left, based on the hierarchy of headings. And the headings themselves collapse and expand like a grown-up outline. Brilliant... But the iOS apps are crippled by comparison I rely on good functionality while using a small screen, often standing up or engaged in discussion.
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