diff --git a/wiki/Home.md b/wiki/Home.md
index 890355c..abcf383 100644
--- a/wiki/Home.md
+++ b/wiki/Home.md
@@ -93,12 +93,12 @@ flowchart TB
 
 <!-- BEGIN AUTOGEN: topic-contract -->
 
-| Canonical topic | Aliases | Payload | Effect |
-|---|---|---|---|
-| `set.mode` | `setMode` | `string` | Replaces the named state value with the supplied payload. |
-| `set.scaling` | `setScaling` | `string` | Replaces the named state value with the supplied payload. |
-| `child.register` | `registerChild` | `string` | Parent/child plumbing — registers or unregisters a child node. |
-| `set.demand` | `Qd` | `any` | Replaces the named state value with the supplied payload. |
+| Canonical topic | Aliases | Payload | Unit | Effect |
+|---|---|---|---|---|
+| `set.mode` | `setMode` | `string` | — | Switch the machine group between auto / manual modes. |
+| `set.scaling` | `setScaling` | `string` | — | Select the group scaling strategy. |
+| `child.register` | `registerChild` | `string` | — | Register a child machine with this group. |
+| `set.demand` | `Qd` | `any` | `volumeFlowRate` (default `m3/h`) | Operator demand setpoint dispatched to the child machines. |
 
 <!-- END AUTOGEN: topic-contract -->