पृष्ठ कुतपं नाट्ये युक्ता यतो मुखं भरताः । सा पूर्वा मन्तव्या प्रयोगकाले तु नाट्यज्ञैः ॥ ६५॥
In the drama, the back of the stage is considered to be the direction from which the actors enter. This direction is to be considered as the eastern direction by those knowledgeable in the performance at the time of execution.
english translation