docs/8.0/ayanova/docs/inv-purchase-orders.md

@@ -145,14 +145,27 @@ This menu option opens a form for selecting parts to add to this purchase order
 
 #### Receive all
 
-Use this menu option to completely receive the items on order that have not been received yet.  This option should only be used when the order matches the received quantities exactly.  In all other cases you should receive items individually inside their line item edit form.
+Use this menu option to completely receive the items on order that have not been received yet. This option should only be used when the order matches the received quantities exactly. In all other cases you should receive items individually inside their line item edit form.
 
 ### Item edit form
 
 ![po item edit form](img/inv-po-item-edit.png)
 
+This is the form where new items are manually entered or existing items edited / received.
 
+Most of the fields here are duplicated in the po items table columns and are documented in detail below. Here we'll describe unique items in this form only.
 
+#### PO Cost edit form field
+
+This field will be filled in automatically when the edit form is saved with a selected part providing a Cost was entered for that part previously.
+
+#### Received Cost edit form field
+
+Enter the actual received cost if it differs from the PO Cost when receiving or, this field will be set automatically to the PO Cost value if it's found to be zero or empty when the PO is saved. Received cost is for reference purposes here only, it does not affect any other record in AyaNova.
+
+#### Receiving in the edit form
+
+In the case of a partial receipt, enter the quantity delivered in the `Quantity received` field. If all items were received click on the `Receive all` button at the bottom of the form (displayed when there is less received than ordered for this item) to automatically set the received quantity to the ordered quantity for this line item.
 
 #### Changing received line items
 
@@ -180,6 +193,28 @@ This read only field displays the value entered in the [Part](inv-parts.md) reco
 
 #### Quantity ordered
 
+This is the order amount entered into the line item.
+
+#### Quantity received
+
+This is the actual received amount to date that was entered into the line item.
+
+#### Received date
+
+Date of most recent receipt of this line item.
+
+#### PO cost
+
+The single per unit cost entered for this po line item.
+
+#### Received cost
+
+The single per unit actual cost at receipt entered for this po line item.
+
+#### Tax code
+
+The [Tax Code](acc-tax-codes.md) in effect for this purchase (not the tax code used to sell this part).
+
 #### Net total
 
 This value is the sum of the Quantity multiplied by the received cost of this line item before taxes. This value is calculated at the _server_ so will not display until a record is saved.