Supplement & Adventure Compatibility Declaration
Every third-party or first-party supplement declares compatibility using a standardized block in the front matter. This block is also machine-readable for the web SRD (structured as metadata).
COMPATIBILITY DECLARATION
Product: [Title]
Reference Code: AX.S[XX]
Core Compatibility: AX.C (full)
Catalog Compatibility: AX.GF (primary), AX.GS (secondary — see Appendix C)
Override Points Used: AX.C.09 (adds 3 Setting Perks), AX.C.14 (adds 7 Threats)
New Sections Introduced: AX.SGF.17 (Vehicle Combat rules)
Incompatible With: AX.GP (Post-Apocalyptic — setting assumptions conflict)New sections introduced by supplements use the supplement's own code prefix, preventing namespace collisions with Core or Catalog sections. AX.SGF.17 means: Supplement | Genre Fantasy | Section 17 — it can never be confused with AX.GF.17.