Safe DOCX posture
Custom XML move-destination range end
safe-docx validates balanced IDs and preserves the sampled marker outside rebuild mode; it does not interpret custom-XML move identity.
ECMA-376 edition 5, Part 1 § 17.13.5.10
Custom XML move-destination range end
Product posture and evidence for this normative section. The ECMA publication is the authority; this page reports only the pinned Safe DOCX projection.