Marlowe deviates significantly by having his hero unable to "burn his books" or repent to a merciful God in order to have his contract annulled at the end of the play. Marlowe's protagonist is instead torn apart by demons and dragged off screaming to hell. Dr Faustus is a textual problem for scholars as it was highly edited (and possibly censored) and rewritten after Marlowe's death. Two versions of the play exist: the 1604 quarto, also known as the A text, and the 1616 quarto or B text. Many scholars believe that the A text is more representative of Marlowe's original because it contains irregular character names and idiosyncratic spelling: the hallmarks of a text that used the author's handwritten manuscript, or "foul papers", as a major source.