SPL documents contain both the content of labeling (all text, tables and figures) for a product along with additional machine readable information (including drug listing data elements and clinical data elements). Drug listing data elements include coded information about the product (including product and generic names, ingredients, ingredient strengths, dosage forms, routes of administration, appearance, DEA schedule) and the packaging (package quantity and type). Clinical data elements include coded information about the clinical use of the product (including indications and use, contraindications, drug interactions, warning and precautions and use in special populations).
Donna Elvira arrives and thwarts the seduction (" Ah, fuggi il traditor " – "Flee from the traitor!"). She leaves with Zerlina. Don Ottavio and Donna Anna enter, plotting vengeance on the still unknown murderer of Donna Anna's father. Donna Anna, unaware that she is speaking to her attacker, pleads for Don Giovanni's help. Don Giovanni, relieved that he is unrecognised, readily promises it, and asks who has disturbed her peace. Before she can answer, Donna Elvira returns and tells Donna Anna and Don Ottavio that Don Giovanni is a false-hearted seducer. Don Giovanni tries to convince Don Ottavio and Donna Anna that Donna Elvira is insane (Quartet: " Non ti fidar, o misera " – "Don't trust him, oh sad one"). As Don Giovanni leaves, Donna Anna suddenly recognizes him as her father's murderer and tells Don Ottavio the story of his intrusion, claiming that she was deceived at first because she was expecting a night visit from Don Ottavio himself, but managed to fight Don Giovanni off after discovering the imposture (long recitative exchange between Donna Anna and Don Ottavio). She repeats her demand that he avenge her and points out that he will be avenging himself as well (aria: "Or sai chi l'onore Rapire a me volse" – "Now you know who wanted to rob me of my honour"). In the Vienna version, Don Ottavio, not yet convinced (Donna Anna having only recognised Don Giovanni's voice, not seen his face), resolves to keep an eye on his friend (" Dalla sua pace la mia dipende " – "On her peace my peace depends").