22.9.2.4 ST_Guid

This simple type specifies that its values shall be a 128-bit globally unique identifier (GUID) value.

[Example: Consider the following WordprocessingML fragment for the properties of a single glossary document entry:

<w:docPartPr>
  …
  <w:guid w:val="{00000000-5BD2-4BC8-9F70-7020E1357FB2}" />
  …
</w:docPartPr>

The guid element specifies that the unique identifier associated with the parent entry shall be {00000000- 5BD2-4BC8-9F70-7020E1357FB2}. This value can be used as needed by an application, for example, to uniquely identify a part regardless of its name. end example]

This simple type’s contents are a restriction of the W3C XML Schema token datatype.

This simple type also

specifies the following restrictions:

• This simple type’s contents shall match the following regular expression pattern: {[0-9A-F]{8}-[0-9A-
• F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}}.

[Note: The W3C XML Schema definition of this simple type’s content model (ST_Guid) is located in A.6.9. end note]