Go short [S] - MACD crosses to below the signal line after a large swing.
Go long [L] when MACD crosses to above the signal line.
Strong short signal [S] - the MACD crosses after a large swing and bearish divergence (shown by the fuchsia trendline trendline).
Go long [L]. Flat MACD signals that the market is ranging - we are more likely to be whipsawed in/out of our position.
Exit long trade [X] but do not go short - MACD is significantly below the zero line.
Re-enter your long trade [L].