title: C# .NET instance variable naming convention?
body: <p>I'm doing a small internship at a business and in their code I find classes that are named like this:</p>
  
  <pre><code>public class FlagsConfig
  {
      private static FlagsConfig _instance; 
  }
  </code></pre>
  
  <p>Is the <code>_instance</code> a naming convention of any sort in C#?</p>
  
  <p>I would ask the developers but they are all out today and the next week on some course. </p>