same as the project file with an extension of .config.
For example, the following command would load the tests in the nunit.tests assembly using the
configuration file nunit.tests.dll.config located in the same directory as the dll.
	<pre class="programtext">        nunit.exe nunit.tests.dll</pre>
On the other hand, the following command would load the tests using the configuration file
nunit.tests.config located in the same directory as the csproj file.
      <pre class="programtext">        nunit.exe nuni