The definition of [dataValue] in section 4.1.2 is changed to the following (note the first sentence is unchanged)

[dataValue] The value in the value space (as defined by XML Schema Part 2: Datatypes [XSDLV1] ) of the [datatype] member or special value nil. In a complex element information item this member has no value.

For information items of datatype xs:string, the value is an ordered collection of unsigned 16-bit integer codepoints each having any value from 0x0000 to 0xFFFF. Where defined, these are interpreted as the ISO646 character codes. Codepoints disallowed by ISO 10646, such as 0xD800 to 0xDFFF are explicitly allowed by the DFDL infoset. The codepoints of the string are stored in 'implicit' (also known as logical), left-to-right bidirectional ordering and orientation. DFDL's infoset represents Unicode characters with character codes beyond 0xFFFF by way of surrogate pairs (2 adjacent codepoints) in a manner consistent with the UTF-16 encoding of ISO 10646.