title: Environment Variable for DOT path in Doxygen for Windows
body: <p>My team has developers who are using Windows and Linux. We store Doxyfiles in our version control system. Because of that we leave the DOT_PATH blank, and when I pull from the repo to do a code review I always need to modify the DOT_PATH locally. Can I somehow modify the PATH environment variable in windows such that Doxygen will always find Dot when DOT_PATH is empty? The documentation makes it sound like I should be able to:</p>
  
  <pre><code># The DOT_PATH tag can be used to specify the path where the dot tool can be
  # found. If left blank, it is assumed the dot tool can be found in the path.
  # This tag requires that the tag HAVE_DOT is set to YES.
  
  DOT_PATH               =
  </code></pre>
  
  <p>I edited the PATH variable for my windows account and put in my dot path, <code>C:\Program Files (x86)\Graphviz2.30\bin\</code>, I see that path when I type <code>path</code> in a command shell, but Doxygen doesn't seem to see it.</p>