diff --git a/go/membership/membership.go b/go/membership/membership.go
index c942ccc..8fd93fd 100644
--- a/go/membership/membership.go
+++ b/go/membership/membership.go
@@ -74,11 +74,17 @@ type SeatServed struct {
 
 // StateIssued is one bucket an assignment may reach, by the name its module uses for it (novox/hq ADR 0201).
 // Key, when set, is the one key it may reach (novox/hq ADR 0260): this machine's.
+//
+// PerNode says the state is kept one bucket per node (novox/hq ADR 0593 §6: `composed-<node>`): Bucket is then the
+// buckets' prefix, each bucket the prefix and a node's name, and a key's first part names its node and so its bucket.
+// The runtime reads it as one state (as process.NodeFamily does): a key from its node's bucket, the keys and a watch over
+// every bucket of the family, one created later included. Read only: PerNode is never issued with Writes.
 type StateIssued struct {
-	Name   string `json:"name"`
-	Bucket string `json:"bucket"`
-	Writes bool   `json:"writes,omitempty"`
-	Key    string `json:"key,omitempty"`
+	Name    string `json:"name"`
+	Bucket  string `json:"bucket"`
+	Writes  bool   `json:"writes,omitempty"`
+	Key     string `json:"key,omitempty"`
+	PerNode bool   `json:"per-node,omitempty"`
 }
 
 // LogIssued is one log an assignment may reach, by the name its module uses for it (novox/hq ADR 0297).