private static Dictionary<string, string> _replacePatterns = new Dictionary<string, string>()
  {
    { "OPPONENT", "Atlanta Knight" },
    { "GAME_TIME", "7:30pm" },
    { "GAME_NUMBER", "161" },
    { "DATE", "October 18 2022" },
  };
  static void Main( string[] args )
  {
                
    // Load a document.
    using( var document = DocX.Load( "ReplaceText.docx" ) )
    {
      // Check if all the replace patterns are used in the loaded document.
      if( document.FindUniqueByPattern( @"<[\w \=]{4,}>", RegexOptions.IgnoreCase ).Count > 0 )
      {
        // Do the replacement of all the found tags and with green bold strings.
        var replaceTextOptions = new FunctionReplaceTextOptions()
        {
          FindPattern = "<(.*?)>",
          RegexMatchHandler = Program.ReplaceFunc,
          RegExOptions = RegexOptions.IgnoreCase,
          NewFormatting = new Formatting() { Bold = true, FontColor = System.Drawing.Color.Green }
        };
        document.ReplaceText( replaceTextOptions );
        // Save this document to disk.
        document.SaveAs( "ReplacedText.docx" );
      }
    }
  }
  private static string ReplaceFunc( string findStr )
  {
    if( _replacePatterns.ContainsKey( findStr ) )
    {
      return _replacePatterns[ findStr ];
    }
    return findStr;
  }