Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/libraries/HaXml/tests/xml-conformance/ibm/invalid/P56/out/ibm56i15.xml
<test> <landscape sun="image3 image4"></landscape> In an attribute declaration, values of type ENTITIES match the Name production and the ENTITIES value does not match one or more names of entities declared in the DTD. </test>