2 Appendix

Structure

• Chapter 5: Retired Tags
  • Section 5.1: Expanded Tags
  • Section 5.2: Tags without Context
  • Section 5.3: Obsolete Constructions
  • Section 5.4: Reclassified Tags
  • Section 5.5: Retired Subsections
    • Subsection 5.5.1: The Universal Property of $\mathrm{h} \mathit{\operatorname{\mathcal{C}}}$