title: How to change the "Inherited Values" in Property Page in Visual Studio 2012 Express
body: <p>I downloaded the source for a library I want to include in a project I am working on.  In the Properties Page > Config Properties > C/C++ > Preprocessor.  Click Edit from the Preprocessor Definitions drop down menu.</p>
  
  <p>The bottom half of the dialog shows "Inherited values", these are read only.  I would like to know where these values are set, so that I can edit them.</p>