title: How can I clean up Eclipse "run configurations"
body: <p>I set my java runtime options in Eclipse's Window > Prefs > Java > Installed JREs > Default VM Arguments.  Since this setting is sufficient for all my <code>main()</code> entry points, I do not bother with customizing the "run configurations".  It looks like nice flexibility but I probably will never need it.  I was worried that I would have to repeat my VM arguments in the run configurations and so I started to copy my VM arguments but after an experiment it seems that I do not have to.  Now I will have the opposite worry that I have some unintended customizations.  </p>
  
  <p>To eliminate the second worry, is there a way to eliminate the clutter visible in the Run drop down menu?  What about the "Launch configurations" visible in the JAR export dialog?  Is a run configuration the same thing as a launch configuration?  How do I eliminate the multiple launch configurations?</p>
  
  <p>I am on Eclipse Indigo on Ubuntu.</p>
  
  <p><strong>Edit</strong> After I manually delete all the run configurations, and proceed to do an export, buttons are greyed-out so I can't proceed.  When I select the launch configuration drop-down, I end up with only one choice, from an unrelated project.  I then created a run configuration for the real <code>main</code> entry point for the current project.  I expect the clutter will return as I continue to use Eclipse.</p>