...Hello, I reexamined the marker problematic again.
..."When comparing two areas to determine which one is better, the terms "first" and "last" refer to the pre-order traversal order of the area tree."
The quote above shows another problem: I'm used to the term "pre-order" in context of binary trees, where it means that first the "first"/"left" subtree is visited, then the node itself, then the "last"/"right" subtree. Unfortunately, the area tree is hardly a binary tree. How should the term be interpreted in this context?
Let's take an example: <fo:block id="A"> <fo:marker marker-class="I" id="m1"/> <fo:block id="B"> <fo:marker marker-class="I" id="m2"/> ... </fo:block> </fo:block>
Joerg,
More heart-in-the-mouth stuff for me, as I have coded the pre- and post-order iterators in Node according to another interpretation, and I have just had a mad search to try to justify it.
From the DOM Level 2 Traversal and Range spec glossary:
document order
The term document order has the same meaning as depth first, pre-order traversal, which is equivalent to the order in which the start tags occur in the text representation of the document.
In such an ordering, A precedes B.
Block B is, according to my interpretation of "pre-order" before block A, therefore retrieving class I with first-starting-within-page would get marker 2. Also, retrieving with either last-starting-within-page or last-ending-within-page should return marker m1.
-- Peter B. West [EMAIL PROTECTED] http://www.powerup.com.au/~pbwest/ "Lord, to whom shall we go?"
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