diff --git a/.github/rulesets/Optimus-Branch.json b/.github/rulesets/Optimus-Branch.json
new file mode 100644
index 00000000..03ad4882
--- /dev/null
+++ b/.github/rulesets/Optimus-Branch.json
@@ -0,0 +1,44 @@
+{
+  "name": "Optimus-Branch",
+  "target": "branch",
+  "enforcement": "active",
+  "conditions": {
+    "ref_name": {
+      "include": ["~DEFAULT_BRANCH"],
+      "exclude": []
+    }
+  },
+  "bypass_actors": [],
+  "rules": [
+    {
+      "type": "deletion"
+    },
+    {
+      "type": "non_fast_forward"
+    },
+    {
+      "type": "required_signatures"
+    },
+    {
+      "type": "pull_request",
+      "parameters": {
+        "required_approving_review_count": 2,
+        "dismiss_stale_reviews_on_push": true,
+        "require_code_owner_review": true,
+        "require_last_push_approval": true,
+        "required_review_thread_resolution": true,
+        "require_extra_approval_for_unattributed_changes": true,
+        "required_reviewers": [],
+        "allowed_merge_methods": []
+      }
+    },
+    {
+      "type": "required_status_checks",
+      "parameters": {
+        "strict_required_status_checks_policy": true,
+        "do_not_enforce_on_create": false,
+        "required_status_checks": []
+      }
+    }
+  ]
+}
diff --git a/machine-readable/descriptiles/README.adoc b/machine-readable/descriptiles/README.adoc
index 3b9ea16a..d7d1925e 100644
--- a/machine-readable/descriptiles/README.adoc
+++ b/machine-readable/descriptiles/README.adoc
@@ -60,6 +60,6 @@ These files may be generated from `.scm` sources by transpilation. Source
 
 == See also
 
-* https://github.com/hyperpolymath/standards/blob/main/A2ML-REPO-TEMPLATE.adoc[Repository template]
-* https://github.com/hyperpolymath/standards#a2ml-format-family-7-formats[Format family overview]
+* https://github.com/hyperpolymath/standards/blob/main/A2ML-REPO-TEMPLATE.adoc[Historical A2ML repository template (non-normative)]
+* https://github.com/hyperpolymath/standards#a2ml-format-family-7-formats[Historical A2ML format family overview (non-normative)]
 * `../contractiles/README.adoc` — the normative counterpart family