diff --git a/wiki/Home.md b/wiki/Home.md
index ed22efb..e9476ef 100644
--- a/wiki/Home.md
+++ b/wiki/Home.md
@@ -64,14 +64,14 @@ The diffuser was a small node so the P6.4 refactor did not split it into per-con
 
 <!-- BEGIN AUTOGEN: topic-contract -->
 
-| Canonical topic | Aliases | Payload | Effect |
-|---|---|---|---|
-| `data.flow` | `air_flow` | `number` | Pushes a value into the node's measurement stream. |
-| `set.density` | `density` | `number` | Replaces the named state value with the supplied payload. |
-| `set.water-height` | `height_water` | `number` | Replaces the named state value with the supplied payload. |
-| `set.header-pressure` | `header_pressure` | `number` | Replaces the named state value with the supplied payload. |
-| `set.elements` | `elements` | `number` | Replaces the named state value with the supplied payload. |
-| `set.alfa-factor` | `alfaFactor` | `number` | Replaces the named state value with the supplied payload. |
+| Canonical topic | Aliases | Payload | Unit | Effect |
+|---|---|---|---|---|
+| `data.flow` | `air_flow` | `number` | `volumeFlowRate` (default `m3/h`) | Push the measured air flow into the diffuser model. |
+| `set.density` | `density` | `number` | — | Update the air density used in OTR / SOTR calculations. |
+| `set.water-height` | `height_water` | `number` | — | Update the water column height above the diffusers (m). |
+| `set.header-pressure` | `header_pressure` | `number` | — | Update the header (supply) pressure feeding the diffusers (mbar). |
+| `set.elements` | `elements` | `number` | — | Update the count of active diffuser elements. |
+| `set.alfa-factor` | `alfaFactor` | `number` | — | Update the alfa factor used in oxygen-transfer correction. |
 
 <!-- END AUTOGEN: topic-contract -->