Paragraph flow object

[Yan Sorkin <Yan@xxxxxxxxxxxxx>]

Hello!

Some newbie questions about paragraph flow object.

Quotation from ISO/IEC 10179:1996(E):

A paragraph flow object represents a paragraph. It has a single
principal port. The contents of
this port may be either inlined or displayed. Inline flow objects are
formatted to produce line
areas. Displayed flow objects implicitly specify a break, and their
areas shall be added to the
resulting sequence of areas. A paragraph flow object may only be
displayed.

Question:
According to above, I can include paragraph-flow-object into other
paragraph-flow-object, e.g.

(element par
    (make paragraph
        (make sequence
            (make paragraph)
            (make paragraph)
            (process-children))

, or something like that.

How the enclosing paragraph should be formatted? Should it be split to 2
actual paragraphs? 3 actual paragraphs? What about characteristics like
space-before - before what exactly the space should be added in each
case?
Generally, what paragraph inside other paragraph means?

Thank in advance.
Regards,
Yan


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