On my lcd my characters collide, how can i remove one(because of the programming) My code means that when i press a button it displays a word, but by default words are already there and i need to get rid of those default words.

#include &lt;LiquidCrystal.h&gt;

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7,8,9,10,11,12);

int buttonApin = 4;

void setup() {
 pinMode(buttonApin, INPUT_PULLUP);
  // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("Mission Control ");
}

void loop() 
{
  if (digitalRead(buttonApin) == LOW)
  {
    lcd.setCursor(0, 1);
    lcd.print("Test");
  } 


  lcd.setCursor(0, 1);

lcd.print("launch in ");  
lcd.print(millis()/1000);
Either clear the display first, or print enough spaces after to overwrite the existing text.