The Back Matter provides the supporting evidence for your research. It is the repository for raw data, extended proofs, and the "paper trail" of your sources. While it follows the main narrative, it is vital for any reader wishing to verify your results or explore your citations further.
Appendices: Managing supplemental data, CAD drawings, and code.
Bibliography: Formatting the final reference list with the required hanging indents.
The "One-Space" Rule: Final checks for punctuation and spacing consistency.