title: Sandcastle not documenting Property summaries
body: <p>I'm using SandCastle with the HelpBuilder GUI for the first time today to help create an API of some of our exposed functions and properties. I've included <code>/// &lt;summary&gt; ... &lt;/summary</code> on a number of the properties where I felt they would benefit from an extra documentation or examples of use. </p>
  
  <p>When I build the output file to chm, I'm not seeing the summary descriptions at all. All of property members are listed, but their descriptions are blank. I've rebuilt the project, and tried a few different settings in SandCastle, but they're still not showing up.</p>
  
  <p>Is there something obvious I'm overlooking? Does SandCastle not read property summaries? Or do summaries need a different keyword?</p>