Natyashastra
यश्च कक्ष्याविभागोऽयं नानाविधिसमाश्रितः । रङ्गपीठगतः प्रोक्तो नाट्यधर्मी तु सा भवेत् ॥ ८२॥
The division of the stage, which is based on various methods and established on the platform, is considered to be the prescribed form of drama.
english translation
yazca kakSyAvibhAgo'yaM nAnAvidhisamAzritaH । raGgapIThagataH prokto nATyadharmI tu sA bhavet ॥ 82॥
hk transliteration by Sanscript