MACDH(len1, len2, len3)
len1 - bar count formula
len2 - bar count formula
len3 - bar count formula
MACDH is the difference between MACD and its signal line.
It is calculated as MACD(len1,len2) - MACDS(len1, len2, len3).
This indicator supports ultra-fast one-pass calculation when given its own Data Section item.