22.9.2.15 ST_UniversalMeasure

This simple type specifies that its contents will contain measurement expressed using one of common measure units. The content of this type is a decimal number immediately followed by a unit identifier. Unit identifiers are case sensitive and shall be in lowercase. Conforming applications are not required to preserve units of measure between loading and saving a particular document.

The following table lists units of measure which are allowed together with their definition based on existing standard or expressed as a conversion from other unit of measure.

Unit Identifier

Definition

As defined in ISO 31.

As defined in ISO 31.

1 in = 2.54 cm (informative)

1 pt = 1/72 in (informative)

1 pc = 12 pt (informative)

1 pi = 12 pt (informative)

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

This simple type also

specifies the following restrictions:

• This simple type’s contents shall match the following regular expression pattern: -?[0-9]+(.[0-
• 9]+)?(mm|cm|in|pt|pc|pi).

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