역추세_Three-day Unfilled Gap Reversals

//[필터] 갭다운 발생후 갭필되지 않음
//[매수진입] (갭다운일로부터 3일동안) 갭다운일H
//[손절매] 갭다운일L
//[출처] [book] STREET SMARTS



if O < C[1] Then{
 var1 = index;
 var2 = H;
 var3 = L;
}

if index <= var1+3 and C > var2 Then
 buy();

if C < var3 Then
 exitlong();