title: Eclipse Folder is transparent/grayed out. What does it mean?
body: <p>My jni folder in Eclipse looks like this:</p>
  
  <p><img src="https://i.stack.imgur.com/3bWSO.png" alt="enter image description here"></p>
  
  <p>It is grayed out and has a diagonal line across it.  What does it mean?  I can still edit my native C++ code in this folder and see the changes as I test the application.</p>