[Cin] Blue Banana, again

The revision of the manual on the plugin chapter is not yet finished, and for that I apologize to everyone, especially Phyllis for the extra workload. I have added tips to Blue Banana and made minor corrections. But I have left untouched the parts that I don't understand well and that don't seem clear to me. If anyone can suggest improvements I would be grateful. I also attach the txt that contains the additions, but they do not show where I put them in the manual. Also in these, if you find errors in them, please report it to me.