Hi Zbyszek,
This is what is mentioned in the documentation for <section> element
documentation in "DocBook: The Definitive Guide" by Norman Walsh and
Leonard Muellner With contributions from Bob Stayton.
"None of the sectioning elements is allowed to "float" in a component.
You can place paragraphs and other block elements before a section,
but you cannot place anything after it."
The reason could be that in printed output of a book end of each
section should be identified by reader. It would be more convenient in
a printed book that content should be followed just after the title of
section rather than a section title and then some content and some
nested section then content for the parent section.
So in a printed book it is usually impossible for a reader to detect
the end of the enclosed section and, therefore, all content after a
section appears in that section.
--
Regards,
Anup Rav.
