 tests.
   <li><b>Separate</b> means that all the tests are run in a separate process
       that NUnit creates.
   <li><b>Multiple</b> means that NUnit will create a separate process for
       each test assembly in the project and run its tests there.
   </ul>

<h4>Domain Usage</h4>
<p>This dropdown list allows you to specify how tests are loaded into
   AppDomains by NUnit. Three settings are defined:
   <ul>
   <li>The <b>Default</b> setting refers to the option selected by the user
       on the Assemb