I don't follow. This passage implies that this is supposed to work (except on "some old translators"), but it contradicts the bulk of the document which states that paragraphs must be followed by (actually, terminated with) a blank line.
I was indeed reading the fine manual, read it end to end several times, and cross-checked versions 10.1 and the current 12.whatever. My observation stands: the example which is implied to work as-is on current translators contradicts the description given earlier. If it's not intended to work, why explain that it must be changed for "older" parsers? If it never works at all, it's a silly thing to say.
I think I can afford the -- vote. But I think it's unwarranted, after re-reading my post.