4. Notation

4.1 General

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Change paragraph below NOTE 2 as follows:

Token characters used to delimit objects and describe the structure of PDF files, as defined in 7.2, "Lexical conventions", shall be identified by their INCITS 4-1986 (R2017) (ASCII 7-bit USA codes) character name written in upper case uppercase followed by a parenthetic two digit hexadecimal character value with the suffix "h".

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Change last paragraph as follows:

Characters in text streams, as defined by 7.9.2, "String object types", are identified by their Unicode character name written in uppercase in font followed by a parenthetic four or five digit hexadecimal character code value with the prefix "U+" as shown in the example in this clause:

EXAMPLE EN SPACE (U+2002)

4.2 Established notations

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Append the following paragraph to the end of this subclause as follows:

In this document and by convention, XMP examples always use the preferred prefixes for XMP standard and specialised namespaces as specified in ISO 16684-1 and at https://developer.adobe.com/xmp/docs/XMPNamespaces.

Last modified: 27 April 2024