Final answer:
The doors to the tiring house in ancient Greek theatre served as symbolic entrances and exits, signifying the importance and origin of characters as they appeared on stage.
Step-by-step explanation:
The doors to the tiring house served a crucial role for the actors, especially in ancient Greek theatre. The tiring house, or the skene, had doors that acted as symbolic entrances and exits for characters. The main central door was often reserved for the protagonist or main characters, possibly a figure like a king, while the smaller side doors were used by messengers or secondary characters who may be entering from outside the city. Thus, these doors not only served a functional purpose but also a narrative one, helping to signify the importance and the origin of characters as they appeared on stage. The use of doors continued to evolve in theatre and art over time, reflecting the style and need of the era.