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The saxon:double-space attribute

When the output method is XML with indent="yes", the saxon:double-space attribute may be used to generate an extra blank line before selected elements. The value is a whitespace-separated list of element names. The attribute follows the same conventions as cdata-section-elements: values specified in separate xsl:output or xsl:result-document elements are cumulative, and if the value is supplied programmatically via an API, or from the command line, then the element names are given in Clark notation, namely {uri}local. The effect of the attribute is to cause an extra blank line to be output before the start tag of the specified elements.

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