   bool localUTCTimeDate = !digitalRead(CONVERT_TO_LOCAL_SW);
   bool displayHdop = !digitalRead(DISPLAY_HDOP_SW);
   bool cardinal8_16 = !digitalRead(CARDINAL_SW);
-  bool notUsedYet = !digitalRead(NOT_USED_YET_SW);
+  bool lowSpeedOverride = !digitalRead(LOW_SPEED_OVERRIDE);
 #endif
 #ifdef DATA_VALID_OVERRIDE
   const bool dataValidOverride = true; // Set true to override data valid for debugging

    lcd.print(GPSData.lon);
    if ((digitalRead(SPEED_ALTITUDE_SW))) {
      lcd.setCursor (12, 1);
      if (GPSData.speed < SPEED_CUTOUT) {
        lcd.print("0  ");
      }
      else {

          if (GPSData.heading <= 99.9) lcd.print(" "); // Clear the extra char
        } // if (headingToggle)
      } // if (now - prevHeadingTime > TOGGLETIME_INTERVAL)
    } // if ((GPSData.speed < SPEED_CUTOUT) && (lowSpeedOverride))
    lcd.setCursor (0, 3); // Go to 4th line
    if ((digitalRead(ALTITUDE_DATE_TIME_SW))) {
      lcd.print("Alt: ");
