Expectations:
| Form used | SAXON 6.5.2 from Michael Kay vsn 1 | Microsoft vsn 1 | libxslt vsn 1.0 | Apache Software Foundation vsn 1 | Fourthought Inc. vsn 1 |
| uriIncl.xml | OK | OK | OK | OK | OK |
| file:/uriIncl.xml | failed | Not run | failed | failed | failed |
| file://uriIncl.xml | failed | Not run | failed | failed | failed |
| file:///uriIncl.xml | failed | Not run | OK | failed | failed |
| file:///c:/sgml/uriincl/uriIncl.xml | OK | OK | OK | OK | failed |
| file://c:/sgml/uriincl/uriIncl.xml | OK | OK | failed | OK | failed |
| file:/c:/sgml/uriincl/uriIncl.xml | OK | OK | failed | OK | failed |
| file:///h:/uriIncl.xml | OK | OK | OK | OK | failed |
| file://h:/uriIncl.xml | failed | OK | failed | failed | failed |
| file:/h:/uriIncl.xml | OK | OK | failed | OK | failed |
| file:/localhost/c:/sgml/files/uriIncl.xml | failed | Not run | failed | failed | failed |
| file://localhost/c:/sgml/uriincl/uriIncl.xml | OK | OK | OK | OK | failed |
| file:///localhost/c:/sgml/files/uriIncl.xml | failed | Not run | failed | failed | failed |
| h:/uriIncl.xml | failed | OK | OK | OK | Not run |
| \\church\data3\users\dpawson\uriIncl.xml | failed | OK | failed | OK | failed |
| //church/data3/users/dpawson/uriIncl.xml | failed | OK | OK | failed | OK |
| file://church/data3/users/dpawson/uriIncl.xml | failed | OK | failed | failed | OK |
| file://\\church\data3\users\dpawson\uriIncl.xml | failed | OK | failed | OK | OK |
| file:///h:/uriIncl.xml | OK | OK | OK | OK | failed |
| file:///h:/uriIncl.xml | OK | OK | OK | OK | failed |
| '' | failed | Not run | failed | failed | failed |
| file:///c:/sgml/uriincl/uriincl.xml | OK | OK | OK | OK | Not run |
uri access is quite variably implemented. Also limited by OS (acceptable), by language (variable, e.g. Java security restricts access to networked drives) and by implementors options.