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Hi, I have following XML: input XML <?xml version="1.0"?> <Documents> <Document title="1" chapter="i" href="file1.xml" filter="food"> <Article title="1.1" info="sub" filter="drink" state="1"/> <Article title="1.2" info="main" filter="food" state="3"/> <Article title="1.3" info="main" filter="drink" state="2"/> </Document> <Document title="2" chapter="ii" href="file2.xml" filter="drink"> <Article title="2.1" info="main" filter="drink" state="1"/> <Article title="2.1" info="sub" filter="drink" state="3"/> <Article title="2.2" info="main" filter="food" state="2"/> </Document> <Document title="3" chapter="1" href="file2.xml" filter=""> <Article title="3.1" info="sub" filter="drink" state=""/> <Article title="3.2" info="child" filter="" state="8"/> </Document> <Document title="4" chapter="2" href="file2.xml" filter=""> <Article title="3.1" info="sub" filter="drink" state=""/> <Article title="3.2" info="main" filter="food" state="1"/> </Document> </Documents> I want pick only Article elements where attribute info="main" info-attribute is not located on the Document level, only on Article level, so when info="main" located it should be placed in the same originating Document node wheter info-atribute is located on Document level or not. I need to order output XML by Chapter, chapter-attribute, on Document-level. (i,ii,1,2 ... n) Then I need to sort the output on Article level by state, ascending. the output XML should look like this <?xml version="1.0"?> <Document title="1" chapter="i" href="file1.xml" filter="food"> <Article title="1.3" info="main" filter="drink" state="2"/> <Article title="1.2" info="main" filter="food" state="3"/> </Document> <Document title="2" chapter="ii" href="file2.xml" filter="drink"> <Article title="2.1" info="main" filter="drink" state="1"/> <Article title="2.2" info="main" filter="food" state="2"/> </Document> <Document title="4" chapter="2" href="file2.xml" filter=""> <Article title="3.2" info="main" filter="food" state="1"/> </Document> -Mike
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