title: What's the difference between ui.alert and Browser.msgBox?
body: <p>When working with Google Scripting, there's a <code>Browser.msgBox();</code> (<a href="https://developers.google.com/apps-script/reference/base/browser" rel="noreferrer">Link</a>) and <code>ui.alert();</code> (<a href="https://developers.google.com/apps-script/reference/base/ui" rel="noreferrer">Link</a>).  What is the difference between the two?  They appear to do the exact same thing.</p>
  
  <p>There are more methods within, such as <code>Browser.inputBox();</code> and <code>ui.prompt();</code> which again, appear to be identical.</p>