title: Google apps script: how to edit/modify an existing script
body: <p>I have created a Google apps script "to download attachments from GMail" from a tutorial. I executed that script for one time.</p>
  
  <p>Then I logged out of Google. Now when I logged in again, I saw the desired script titled "gmailAttachment2drive" in my Google drive. But I want to edit it again to make some changes to it. But I am unable to do it. I cannot even see the source code of that script.</p>
  
  <p>Here are the different things I tried and the responses I got:</p>
  
  <ul>
  <li>If I click on it, I see some "connect app" pop-up type of page, which just shows a bunch of other scripts developed by other people.</li>
  <li>If I right clicked it, I don't see any option to edit the script. I tried all options there but could not edit the script.</li>
  <li>When I opened "<a href="https://script.google.com/" rel="nofollow">https://script.google.com/</a>" it doesn't show that script. When I clicked "Open" on the File menu, it showed "No saved projects to open"</li>
  </ul>
  
  <p>So, how do I open an existing script that is there in my Drive?</p>
  
  <p>I searched a lot on Google the following "Google apps script how to edit an existing script" but could not get any help to resolve the issue.</p>