Legacy support features (deprecated features) seem to be hard to find from the Part 4 document. The interpretation of the proposed standard could be easier to all parties if these features were clearly separated

Separate normative parts clearly from informative parts.

Part 4

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Proposed Disposition of DIS 29500 Comment FI-0004 (Modified: 2007-12-20) Agreed; all deprecated features will be removed from their current locations in Part 4, and placed it into a new annex for deprecated features. Following the precedent set by other ISO standards (such as SQL’s ISO 9075:2003 Part 1 and C++’s ISO/IEC 14882:1998), we will make use of a new Annex that contains normative descriptions of all deprecated features. The intent of this Annex is to enable a transitional period during which existing binary documents being migrated to DIS 29500 can make use of those deprecated features to preserve their fidelity, while noting that new documents should not use them. Accordingly, the Conformance clause will also be changed to state that newly created documents (those not created by migrating existing binary documents) should not use deprecated features. All deprecated features will be removed from their current locations in the standard, but will be fully defined in this new Annex.