Originally Posted by Linuxser

The OsMA is just the difference between two moving averages.

If you set the MA1 to 12 and the MA2 to 26 you get the MACD histogram (if you´re using a 12,26 MACD)

Here is the OsMa posted in the previous post with the option to "apply to" close/open/high/low. All you need to match with default MT4.