Absolute URIs on the Local File System
-
file:///c:/xml/docbook42/docbookx.dtd
-
file:///share/schemas/relax-ng/docbook/4.2/docbook.rng
-
file:///export/home/john/doctypes/xml/docbook/4.2/docbookx.dtd
These identifiers are only useful (in general) on the system where they
were created.