The conformance level for reuse (WTPDF 1.0 §6.1.2): tagging good enough to extract, reflow and repurpose the content, declared as WellTaggedReuse.
Reuse = 1
WTPDF 1.0 §6.1.2 (veraPDF WTPDF 1.0 Reuse validation profile, rule 6.1.2-1).