[css3-2d-transforms] skew(<angle> [, <angle>])

Hello,

this is about
http://www.w3.org/TR/2009/WD-css3-2d-transforms-20091201/
and is related to
http://lists.w3.org/Archives/Public/www-style/2009Mar/0287.html

Because there seems to be no change and no answer, I would
like to ask again, what skew(<angle> [, <angle>]) exactly means?
If no one can explain it - does it have a meaning at all?
For example the corresponding transformation matrix would be
sufficient for me to understand this...


Olaf