Simple method annotation

Documentation comments are placed directly above the method or class they describe. They begin with three forward slashes ///, and allow meta information to be stored via XML.

/// <summary>
/// Bar method description
/// </summary>
public void Bar()
{ 
        
}

Information inside the tags can be used by Visual Studio and other tools to provide services such as IntelliSense:

See also Microsoft’s list of common documentation tags.