Translation
I am also crossed in the wide play, but at the middle of the sword. And immediately that I am crossed, I slide my sword down onto the hands, and if I want to pass with my right foot off the line, I can put a thrust to the chest as drawn hereafter.
Explanation
As the 2nd master, you are in Posta Frontale crossing swords with your opponent in the middle of the blade. Your hands are relatively safe and can be withdrawn by pulling them back to a more neutral position. You can even disengage competely by stepping with your front foot out of range.
For a safe and easy attack, cut straight down the line of your opponents blade as if cutting to Posta Mezzana Porta di Ferro. Strike your opponents left hand or forearm on the way through.
Alternatively, you can step through and offline to the right with your back foot. This will bring you within the range of narrow play, and give you a clear line to stab your opponent in the face or chest, as shown by the 1st scholar of the 2nd master.