Errata for XML Schema Part 0: Primer

The document http://www.w3.org/TR/xmlschema-0/ (XML Schema Part 0: Primer
Second Edition) contains four errors in the examples.  The examples labeled:

In section 2, labeled "The Purchase Order, po.xml",
In section 3.1, labeled "A Purchase Order with Unqualified Locals, po1.xml",
In section 3.2, labeled "A Purchase Order with Explicitly Qualified
Locals", and
In section 3.2, labeled "A Purchase Order with Default Qualified Locals,
po2.xml"

Each contain a variant of a "comment" element which is malformed:

<comment>Hurry, my lawn is going wild<!/comment>

The exclamation mark in the closing tag is misplaced; it should be in the
content instead:

<comment>Hurry, my lawn is going wild!</comment>