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//+------------------------------------------------------------------+
//| Skip useless ticks |
//+------------------------------------------------------------------+
double CA.below, CA.above=0; // Export to start

void CallAgain(double when){ 
if (when>=Bid && CA.above > when) CA.above = when; 
if (when<=Bid && CA.below < when) 
CA.below = when; 
return;
}
//+------------------------------------------------------------------+
//| expert start function |
//+------------------------------------------------------------------+
int start(){ static datetime Time0; 
bool newBar = Time0 != Time[0], useless = CA.below <= Bid && Bid <= CA.above; 

if (useless && !newBar) return(0); 
#define INF 9999999 
CA.below = 0; 
CA.above = INF; 
Time0 = Time[0]; 
if (!useless){ 
OnTick(); // Will reset CA's 
ModifyStops(); 
OpenNew(); 
} // Not useless