XSL FO question: Border/Padding and Indents

Hello,

I'm learning XSL FO and going to make an FO formatter,
I have some question about XSL FO specification.

WD XSL(2000-01-12)
5.3.3 Start-indent and End-indent
<quote>
End-indent = margin-corresponding + padding-end + border-end-width 
Start-indent = margin-corresponding + padding-start + border-start-width

If an absolute "margin" property is not explicity specified, these 
equations determine a computed value for the corresponding "margin" 
property given values for the three traits corresponding-indent, 
padding-corresponding and border-corresponding width.
</quote>

I understand, it means:

computed value for margin-corresponding =
   start-indent - border-start-width - padding-start

e.g.
 <fo:block border-start="5pt solid" padding-start="5pt" start-indent="10pt">
equals to
 <fo:block border-start="5pt solid" padding-start="5pt" margin-left="0pt">
(when writing-mode="lr-tb", parent area's start-indent=0)

Ok, but when both start-indent and margin-left are not specified,
how to resolve the computed value of start-indent?
 <fo:block border-start="5pt solid" padding-start="5pt">
equals to which?
 a. <fo:block ... start-indent="10pt">
    (because margin-left is default value 0)
or
 b. <fo:block ... start-indent="0pt">  (and margin-left="-10pt" !!)
    (because start-indent property is inherited)

if b. is correct, it's so different from CSS...


And,
7.9.8 "start-indent"
<quote>
... specifies the distance from the start-edge of the content-rectangle 
of the containing reference-area to the start-edge of the 
allocation-rectangle of that block-area.
</quote>

I think this "the allocation-rectangle of that block-area" is mistake,
the correct is "content-rectangle", no?


Thanks,

--
MURAKAMI Shinyu
murakami@xxxxxxxxxx
http://www.nadita.com/


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