Where is the printf() output displayed?

 

void OnTick()
  {
//--- at each tick we output the High and Low values for the bar with index,
//--- equal of the tick second
   datetime t=TimeCurrent();
   int sec=t%60;
   printf("High[%d] = %G  Low[%d] = %G",
          sec,iHigh(Symbol(),0,sec),
          sec,iLow(Symbol(),0,sec));
  }

 

The above is from an example code, I'm sure it works fine. But I can't find the output text anywhere.

Thanks. 

 
In the MT Terminal, Check the Experts Tab in the Toolbox. The output text will show at that Tab.
 
Thank you Sir!