XSLT/XSLFO/MathML TechnicsSpace 

Q. 
I specified negative value for
spacebefore . However, the block doesn't overlap. Why?
[No.2004032510]


A. 
Sample FO: <fo:block>Sample1</fo:block> <fo:block spacebefore="1cm">Sample2</fo:block> Please refer to 4.3.1. Spaceresolution Rules in the W3C Recommendation for XSLFO. 3. Alternatively if all of the remaining spacespecifiers in S' are
nonforcing, then the resolved spacespecifier is defined in terms of those
nonsuppressed spacespecifiers whose precedence is numerically highest,
and among these those whose optimum value is the greatest. All other
spacespecifiers are suppressed. If there is only one of these then its
value is taken as its resolved value. Otherwise, follow these rules when
there are two or more spacespecifiers all of the same highest precedence
and the same (largest) optimum: The resolved spacespecifier of the last
spacespecifier in the sequence is derived from these spaces by taking
their common optimum value as its optimum.
In Sample FO, 