   *************
   Special Chars
   *************
+  TODO: Verify and fix the line feeds with the scope.
 
   <LF> ('\n') (Line feed, '\n', 0x0A, 10 in decimal <----
   <CR> ('\r') (Carriage return, '\r', 0x0D, 13 in decimal)

        if (com && val) {
          Serial.println("!0");
        } else {
          Serial.println("!0 " + simVar);
        }
        break;
      case 3:   // Format Error

String inputCommand = ""; // A string to capture the command before the space
String inputValue = "";  // A string to capture command value after space
String inputString = ""; // The raw Readline string
String testString = ""; // Used for string testing
String simVar = "10"; // TODO: Set up a larger bank of sim variables

boolean stringComplete = false;  // whether the string is complete
