Remove spurious error conditions before parsing, perhaps caused by other users
of libxml2 in an Apache environment.
1<?xml version="1.0"?> 2<schemaxmlns="http://purl.oclc.org/dsdl/schematron"> 3<title>Test of Schematron validation</title> 4<pattern> 5<rulecontext="zoo"> 6<asserttest="cage[@id]">A zoo contains cages each with an id attribute</assert> 7</rule> 8</pattern> 9</schema>