#include <LCDI2C_Multilingual.h>

LCDI2C_Generic lcd(0x27, 20, 4);  // I2C address: 0x27; Display size: 20x4

void setup() {
  lcd.init();
  lcd.backlight();
}

void loop() {
  String l1test = "Line 1 test";
  String l2test = "Line 2 test";
  String l1overwrite = "Line 1 overwrite";
  String l2overwrite = "Line 2 overwrite";

  lcd.setCursor (0,0);
  lcd.printf ("%-16s", l1test.c_str());
  lcd.setCursor (0,1);
  lcd.printf ("%-16s", l2test.c_str());

  delay(2000);
  lcd.setCursor (0,1);
  lcd.printf ("%-16s", l2overwrite.c_str());

  delay(2000);
  lcd.setCursor (0,0);
  lcd.printf ("%-16s", l1overwrite.c_str());

  delay(2000);
}