Business.AviSynthScriptBuilder.RemoveMT C# (CSharp) Method

        public void RemoveMT() {
            string[] Lines = script.ToString().Split(new string[] { "\r\n", "\n" }, StringSplitOptions.None);
            string[] CommandsToComment = new string[] { "SetMTMode", "SetFilterMTMode", "Prefetch", @"Import(P+""AviSynthMT.avsi"")" };
            string[] NewLines = Lines.Where(l => !CommandsToComment.Any(c => l.StartsWith(c))).ToArray();
            script = new StringBuilder(string.Join(Environment.NewLine, NewLines));
        }

 public void GenerateScript(MediaEncoderSettings settings, bool preview, bool multiThreaded) {
     AviSynthScriptBuilder Script = new AviSynthScriptBuilder(settings.CustomScript);
     if (Script.IsEmpty)
         Script = GenerateVideoScript(settings, GetPreviewSourceFile(settings), preview, multiThreaded);
     else if (preview) {
         Script.RemoveMT();
         Script.AppendLine(@"ConvertToRGB32(matrix=""Rec709"")");
     } else if (!multiThreaded)
         Script.RemoveMT();
     Script.WriteToFile(PreviewScriptFile);
     SaveSettingsFile(settings, PreviewSettingsFile);
 }