Open -> Open Folder

src/site/docs/editor/index.html

 ---
 layout: default
 title: "Dart Editor"
 description: "Read all about Dart Editor's features."
 ---
 
 {% include platform-specific-text/_noscript.html %}
 
 <h1>{{ page.title }}</h1>
 
@@ skipping 164 matching lines @@
 
 <p>
 If you don't see the Welcome page,
 you probably closed it.
 Get it back with <b>Tools > Welcome Page</b>.
 </p>
 
 <p>
 Another way to open a sample is by opening it
 through the <b>File</b> menu.
-Choose <b>File > Open...</b>, then
+Choose <b>File > Open Folder...</b>, then
 navigate to your Dart installation directory.
 Go to <b>samples</b>,
 and then open your sample's directory
 (for example, <b>sunflower</b>).
 </p>
 
 </section>
 
 
 <section id="app">
@@ skipping 15 matching lines @@
 <section id="app-open">
 <h3>Adding apps</h3>
 
 <p>
 Here's how to open an app, which makes it appear in your Files view:
 </p>
 
 <ol>
   <li> <p>
     Go to the <b>File</b> menu,
-    and choose <b>Open...</b>.
+    and choose <b>Open Folder...</b>.
     Or use the keyboard shortcut
     (<b>Ctl+O</b> or, on Mac, <b>Cmd+O</b>).
     </p>
   </li>
   <li> <p>
     Select the directory that contains the app's files,
     and click <b>Open</b>.
     </p>
   </li>
 </ol>
@@ skipping 672 matching lines @@
   <img src="images/key-assist.png"
     alt="screenshot of help for keyboard alternatives"
     width="231" height="235">
 </p>
 
 </section>
 </section>
 
 <script async src="/js/Switcher.dart.js"></script>
 <script async src="/js/editor-downloads-analytics.js"></script>