2.5.3. Section 3: Capability Requirements (CR) and Gaps/Overlaps. Same as the regular ICD with the addition of the Net-Ready performance attribute table. Reference Figure B-2 and describe each attribute in terms of initial minimum values rather than threshold and objective values.

For reference or comparison, below is what the JCIDS Manual says for the ICD 2021 itself:

2.5.4.1. The purpose of this Section is to specify CRs and to assess associated capability gaps in terms of a comparison between the CR and current capability solutions available to the Joint Force or in development.