No it is not special.
It is just whitespace between a start and end tag,
not between two start tags. Your example is correct.
Whitespace from start to start tag or end to start tag is ignored.
<filter> </filter>
<filter>
</filter>
Both of these elements contain whitespace; they are not empty.
This test applies only to simpleTypes. I don't actually
reject this. I check for it, and treat the construct as
an empty tag. You can force the parser to take a whitespace
string using double quotes: <foo>" "</foo>.
/martin
Andy
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