> Marginal notes, sidepar, changepar, etc should be treated analogously,
> without undue emphasis on how a visual formatter displays them.
> The fact that a footnote is printed at the bottom of a page, and a marginal
> note printed on the margin is more a visual layout decision, rather than any
> significant difference in the logical structure represented by these
> constructs.
Terry has pointed out to me that "sidebar" in the USA does not mean text
printed in the margin, as it does elsewhere, but a boxed float, text which
has a rule round it and can float on the page between (or inside?) paras.
So my button is unpinged :-)
///Peter