Case of: include, import, include, include Including level1_import4.xsl From stylesheet level1_import4.xsl: Text of one-tag importing level2_include3.xsl From stylesheet level2_include3.xsl: Text of two-tag Including level3_include1.xsl From stylesheet level3_include1.xsl: Text of three-tag Including final_included.xsl From stylesheet final_included.xsl: Text of four-tag