title: Can UI Automation access every LegacyIAccessible Property? (inspect.exe)
body: <p>looking at inspect.exe there are several properties like </p>
  
  <pre><code>HelpText:   "Press to see all available devices"
  ClickablePoint: {x:500 y:400}
  Orientation:    0
  LegacyIAccessible.ChildId:  0
  LegacyIAccessible.DefaultAction:    "Expand"
  LegacyIAccessible.Description:  ""
  LegacyIAccessible.Help: "Press to see all available devices"
  </code></pre>
  
  <p>I would like to know, if the <strong>HelpText-Prop</strong> can <strong>differ</strong> from the <strong>LegacyIAccessible.Help-Prop</strong> somehow? (maybe in special cases?!) Furthermore it is interesting to me, <strong>if every LegacyIAccessible-Prop is available via UI Automation for 100%?</strong>
  cheers</p>