Several of the example used through-out the specification fail to validate accordingly to the specification, while this seem minor issues, it reflect the overall quality of the document.
To the extend that the specification is trying to address a wide audience from implementer, academics and application programmers, it should appear more correct in its presentation and quality.

I recommend, that the specification should undergo a significant editorial review, which should be conducted by the ECMA organisation

Part 4

Ed

Proposed Disposition of DIS 29500 Comment DK-0074 (Modified: 2008-01-13) Agreed; the examples in the document will be modified so that they are all well-formed XML trees. A thorough pass will be made to identify all areas where this is not the case. It should be noted though that they will not be validated to the schema files because they are just fragments of a document and not an entire document. As such, they often do not start with the root element, but instead are often just a branch of the tree. In addition, there will often be ellipsis “…” within the example to show where other XML markup would normally appear. This missing markup is not relevant to the example, but it may be necessary in order for the file to be valid. This approach was used in order to get across efficiently the usage of the element to which the example pertains. For an example of the use of ellipsis, see the following, which appears in Part 4 clause 2.16.6: <w:bookmarkStart w:name="Text1" … /> <w:fldSimple w:instr="FORMFIELDTEXT"> <w:ffData> <w:calcOnExit/> … </w:ffData> <w:r> <w:t>1</w:t> </w:r> </w:fldSimple> <w:bookmarkEnd w:name="Text1" … /> <w:fldSimple w:instr="=Text1+10"> <w:r> <w:t>11</w:t> </w:r> </w:fldSimple> Regarding the use of xml:space="preserve", the use of this attribute is determined by the presence of significant leading and/or trailing whitespace within the t element, which is why it is not present in all instances. Similar Comments: CH-0015 , CL-0217 , DE-0147 , GB-0135 , IE-0011 , NO-0005 , PE-0007 , PL-0003 , US-0267