clarify the & operator

lenses.hs

@@ -1,4 +1,3 @@
-
 {-
 
 here i show how to use lenses to handle states (didnt found any example on states in internet)
@@ -62,6 +61,10 @@ main = do
   stateRef <- newIORef initialState
 
   -- Corrected lens chain with &
+  {-
+  & is just backwards function application;
+  x f , in which f will be applied to the value x 
+  -}
   modifyIORef' stateRef $ \s ->
     s & ui . keyBindings . at "Ctrl+X" .~ Just "cut"
       & user . prefs . darkMode .~ True