# Appendix D: Background/Supplementary Documentation (non-normative)

This appendix supplies background/supplementary documentation from working groups and task forces for interested readers, including but not limited to object plans, business/use cases, test plans, test results, background and best practice documentation. Last modified dates are included in parentheses.

- InfrastructureDelta3_5.pdf (8/4/2022)
- PESCJSON.pdf (3/8/2021)