2. Normative references
Change the first paragraph as follows:
EDITOR NOTE: The change to ISO boilerplate text below clarifies that amendments and corrigenda to explicitly dated normative references shall not apply to PDF. An amendment or corrigenda to an explicitly dated normative reference shall only apply if it is explicitly added as a new normative reference that is itself dated. Incorrect application of amendments and corrigenda can result in invalid and incompatible PDF files that do not comply with this document. For this reason, normative references that are amendments or corrigenda shall always be explicitly dated. No ISO directive or wording shall override this very explicit technical intention.
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies (not including any amendments). For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
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Correct the date of "Adobe Technical Note #5014" normative reference as follows:
Adobe Technical Note #5014, Adobe CMap and CID Font Files Specification, Version 1.0,
(8 October 199611 June 1993),
Adobe Systems Incorporated1
EDITOR NOTE: (Issue #519) the date for Adobe Technical Note #5014 is also incorrect at https://adobe-type-tools.github.io/font-tech-notes/. There is no 1996 version.
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Replace the MathML 3.0 dated reference with an undated reference to MathML Core as follows:
Mathematical Markup Language (MathML) Version 3.0, 2nd Revision, April 2014, World Wide Web Consortium (W3C), https://www.w3.org/TR/MathML3/
MathML Core, W3C Candidate Recommendation, World Wide Web Consortium (W3C), https://www.w3.org/TR/mathml-core/
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Add new normative references as follows:
"Specification ICC.1:2001-04 - File Format for Color Profiles [REVISION of ICC.1:1998-09]", International Color Consortium, https://www.color.org/specification/ICC.1-2001-04.pdf.
Adobe Technical Note #5902: "PostScript Name Generation for Variation Fonts", Version 1.0, September 14 2016, Adobe Systems Incorporated, https://github.com/adobe-type-tools/font-tech-notes/blob/main/pdfs/5902.AdobePSNameGeneration.pdf