Read Bob's message again, carefully.If you intend to have different
articles and organization for phone and tablet, you'd want two
top-levels.If you're building different phone and tablet, pixel-perfect
content, you'd want two top-levels.If you want the same content and
organization on both phone and tablet, one top-level will make things
easier.If your content is HTML-based with good CSS, it can adapt to both
phone and tablet, and one top-level is great.If your content is
pixel-perfect and you ...