A bit muddled for me as well Kevi. The only thing I know is that for a gap not be filled, it has to created on exceptionally large volume. Like we'll see lots of gaps on open on Tuesday if the US is green on Monday, which will get filled by shorters.
Beyond that nothing permeates deeper into my coconut of a brain LOL.
And I am unable to empirically back test the different gaps they describe there. Any recent real-life examples against those gaps would make them easier to understand.
