I know in many languages like Java and php when testing for multiple conditions
the engine is smart to return false when the first condition fails, so it does not even check
next conditions.
This saves some of the processing time.

I wonder if xsl engines follow the same logic, for example in test like this:

<xsl:when
test="( (string-length($mystring) > 30) and not(contains(substring($mystring, 1, 30), ' ') ) )">

If the string-length is < 30 then the second condition will not even be evaluated?

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/