diff --git a/docs/buy/po.md b/docs/buy/po.md
index 1750767..fa3be33 100644
--- a/docs/buy/po.md
+++ b/docs/buy/po.md
@@ -12,11 +12,18 @@ To access the purchase order page, click on the New Purchase Order which opens the "Create Purchase Order" form.
@@ -27,6 +34,10 @@ A purchase order is linked to a specific supplier, select one in the list of exi
Fill out the rest of the form with the purchase order information then click on Submit
+### Purchase Order Reference
+
+Each Purchase Order is uniquely identified by its *Reference* field. Read more about [reference fields](../settings/reference.md).
+
### Add Line Items
On the purchase order detail page, user can link parts to the purchase order selecting the Order Items tab then clicking on the Add Line Item button.
diff --git a/docs/sell/return.md b/docs/sell/return.md
index be577ba..c2c0164 100644
--- a/docs/sell/return.md
+++ b/docs/sell/return.md
@@ -44,9 +44,9 @@ Each Return Order has a specific status code, as follows:
| Status | Description |
| --- | --- |
| Pending | The return order has been created, but not sent to the customer |
-| In Progress | The return order has been sent to the customer |
-| Complete | The return order was marked as complete |
-| Cancelled | The return order was cancelled |
+| In Progress | The return order has been issued to the customer |
+| Complete | The return order was marked as complete, and is now closed |
+| Cancelled | The return order was cancelled, and is now closed |
## Create a Return Order
diff --git a/docs/sell/so.md b/docs/sell/so.md
index 8c0321f..78e2471 100644
--- a/docs/sell/so.md
+++ b/docs/sell/so.md
@@ -12,11 +12,18 @@ To access the sales order page, click on the New Sales Order which opens the "Create Sales Order" form.
@@ -27,6 +34,10 @@ A Sales Order is linked to a specific customer, select one in the list of existi
Fill out the rest of the form with the sales order information then click on Submit to create the order.
+### Sales Order Reference
+
+Each Sales Order is uniquely identified by its *Reference* field. Read more about [reference fields](../settings/reference.md).
+
#### Add Line Items
On the sales order detail page, user can link parts to the sales order selecting the Line Items tab then clicking on the Add Line Item button.