From 40c36ee7feeb29c2024c37b7f88c7ad639bdda2f Mon Sep 17 00:00:00 2001
From: Pete Bacon Darwin
Date: Thu, 9 May 2013 13:56:36 +0100
Subject: docs(tutorial): add comment about injection annotation

Closes: #1163
---
 docs/content/tutorial/step_05.ngdoc | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'docs/content/tutorial/step_05.ngdoc')

diff --git a/docs/content/tutorial/step_05.ngdoc b/docs/content/tutorial/step_05.ngdoc
index f17174d7..5402cd87 100644
--- a/docs/content/tutorial/step_05.ngdoc
+++ b/docs/content/tutorial/step_05.ngdoc
@@ -138,6 +138,9 @@ describe('PhoneCat controllers', function() {
   describe('PhoneListCtrl', function(){
     var scope, ctrl, $httpBackend;
 
+    // The injector ignores leading and trailing underscores here (i.e. _$httpBackend_).
+    // This allows us to inject a service but then attach it to a variable
+    // with the same name as the service.
     beforeEach(inject(function(_$httpBackend_, $rootScope, $controller) {
       $httpBackend = _$httpBackend_;
       $httpBackend.expectGET('phones/phones.json').
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