(dsssl) Overlapping page-regions? Standard Question

[Javier Farreres de la Morena <spanish@xxxxxxxxx>]

I hope someone in this list can help me get out of confussion.

While reading the DSSSL standard I see in page 203, clause 12.6.4.1:

Page regions may overlap

When I turn to page 204 and I see figure 15. In it I can see a dotted line,
which is named as

Boundary between page region 1 and page region 2

Now, my conception of a boundary is that of something that delimits two
things, and separates them. This conflicts with my idea of "overlapping".
As I understand, there is some contradiction on it, unless I miss something.

If I check figure 5 in page 167, I see again this boundary shown explicitly,
transmitting me the idea of disjoint, rather than overlapping.

Please, can someone solve me this misunderstanding?



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