Original sentence: Also, a previous episode, Remembrance of the Daleks, showed the destruction of Skaro by the Doctor, though the Master's trial may have predated this event in the Daleks' chronology.The Master is shown sporting cat's eyes; this is a reference to his previous appearance in Survival in which he temporarily turns into a cat person
Edited sentence: On the note of uncharacteristic behaviour, there also remains the matter of why the Daleks would hold a trial for an enemy, rather than exterminating him on the spot