[pcabc]

Just to jump in and ask a few questions myself...

They are different variations of the MACD of the AD line. I've attached the settings and turned on the legends so that you can reference them with the settings below.

The most useful indicator on the chart is the 10 and 30 week exponential MAs of the cumulative line imo, as it's signals are very useful, and I think they were talked about in the "Technically Speaking" interview if I remember correctly. But they all give a different perspective that helps with the weight of evidence.

Those averages mirror the price MAs.  I've been plotting the cumulative advance / decline and cumulative advance / decline volume lines (well, very close to) but I've used 50, 200 and 260 days, with the latter representing about a year.  Switching one to 150 to mirror the price MA seems logical.  In the shorter turn I'm getting the impression 200 days may be a little slow, it confirms what has already started or was recently finishing.

Regarding the MACD, I've recently started plotting the MACDs of these two lines, with the most commonly used periods.  I'm wondering whether the '1,200,1' MACD really is a MACD.  Effectively it is just a plot of the price minus the 200 day MA.  So surely it is some form of momentum indicator?