Update warehouse.md (#7544)

added some detail about link between Warehouse & Warehouse account & machanics of sub-warehousese (Warehouse >Room >Row > Shelf >box
diff --git a/erpnext/docs/user/manual/en/stock/warehouse.md b/erpnext/docs/user/manual/en/stock/warehouse.md
index 172e469..74ee8cc 100644
--- a/erpnext/docs/user/manual/en/stock/warehouse.md
+++ b/erpnext/docs/user/manual/en/stock/warehouse.md
@@ -4,15 +4,27 @@
 cities, towns, and villages. They mostly have loading docks to load and unload
 goods from trucks.
 
+The terminology of 'Warehouse" in ERPNext is a bit broader though and maybe can be 
+regarded as "storage locations". For example you can create a sub-Warehouse which 
+practically is a shelf inside your actual location. 
+This can become quite a detailed Tree like >Warehouse >Room >Row >Shelf >Box
+
 To go to Warehouse, click on Stock and go to Warehouse under Setup.  You
 could also switch to 'Tree' View or simply type warehouse tree in the awsone bar.
 
 <img class="screenshot" alt="Warehouse" src="{{docs_base_url}}/assets/img/stock/warehouse.png">
 
 In ERPNext, every Warehouse must belong to a specific company, to maintain
-company wise stock balance. The Warehouses are saved with their respective
-company’s abbreviations. This facilitates in identifying which Warehouse
-belongs to which company, at a glance.
+company wise stock balance. In order to do so each Warehouse is linked with an 
+Account in the Chart of Accounts (by default of the the same name as the Warehouse 
+itself) which captures the monetary equivalent of the goods or materials stored 
+in that specific warehouse. If you have a more detailed Warehouse Tree as the one 
+described above most likely it's a good idea to link the sub-locations (>room >row >Shelf, ...)
+to the account of the actual Warehouse (the root Warehouse of that Tree) as most 
+scenarios do not require to account for value of stock items per Shelf or Box.
+
+Warehouses are saved with their respective company’s abbreviations. This facilitates 
+identifying which Warehouse belongs to which company, at a glance.
 
 You can include user restrictions for these Warehouses. In case you do not
 wish a particular user to operate on a particular Warehouse, you can refrain