diff --git a/README.md b/README.md
index e916d37..5dcdab3 100644
--- a/README.md
+++ b/README.md
@@ -22,4 +22,15 @@ Whilst the application is open source, the webservice (owlboard.fb-infra.uk) is
          - GET: Get list of stations
              - Returns JSON: `{"STATION NAME":{"CRS":"code","TIPLOC":"code"}}`
 
-     - /ldb:
\ No newline at end of file
+     - /ldb:
+
+## Stack:
+  - app.js -> Launches server, Entry Point, defines routers and middlewares.
+     - routes -> Routers - Directs requests to controllers.
+         - controllers -> Checks auth, sends response.  Request doesn't pass further.
+             - services -> Provide data and do tasks, uses other services and utils.
+
+     - utils -> Provide utility functions that can be called by services.
+     - configs -> Provide configuration details for other files.
+     - static -> Holds files for static service, should be hosted behind a caching proxy.
+     
\ No newline at end of file
diff --git a/src/controllers/test.controllers.js b/src/controllers/test.controllers.js
index 1d2f48f..dcee6c5 100644
--- a/src/controllers/test.controllers.js
+++ b/src/controllers/test.controllers.js
@@ -10,6 +10,7 @@ async function get(req, res, next){
 }
 
 async function post(req, res){
+    // try { checkAuth(req.body) } catch (err) { req.header(401); req.body({401:"unauthorised"})}
     try {
         res.json(await test.post(req.body))
     } catch (err) {