Document inventory management.

docs/guide/inventory.md

@@ -0,0 +1,26 @@
+# Inventory tracking
+
+A new feature available in farmOS 7.x-1.0-beta16 is an inventory module, which
+allows for tracking of asset inventory levels over time via [logs]. As of this
+release, inventory management is only enabled on [animal] assets, but will be
+enabled on other asset types in future releases. For more information about
+tracking animal inventory, read the [animal] asset user guide.
+
+Inventory can be added/subtracted from an asset using the "Inventory
+adjustment" fields on logs. You may also make more than one inventory
+adjustment on an individual log (to different assets, for example).
+
+The inventory adjustment field has two subfields: **Asset** and **Value**.
+
+The asset field references the asset whose inventory is being adjusted. The
+value field is a positive or negative adjustment to the asset's inventory. A
+positive number will add to the inventory, and a negative number will subtract
+from the inventory.
+
+An asset's current inventory is visible on the asset record page. You can also
+view a list of all logs that have adjusted the asset's inventory in the past
+(as well as planned inventory adjustment logs in the future).
+
+[logs]: /guide/logs
+[animal]: /guide/assets/animals
+

mkdocs.yml

@@ -19,6 +19,7 @@ pages:
         - Sensors: guide/assets/sensors.md
         - Groups: guide/assets/groups.md
     - Movements and location: guide/location.md
+    - Inventory tracking: guide/inventory.md
     - People: guide/people.md
     - Import: guide/import.md
     - Export: guide/export.md