Natyashastra
समचारीप्रयोगो यस्तत्समं नाम मण्डलम् । आचार्यबुद्ध्या तानीह कर्तव्यानि प्रयोक्तृभिः ॥ ६९॥
The formation that results from the application of coordinated movements is called a "Samam" (equivalent formation). These formations should be performed by the practitioner with the guidance of the teacher's wisdom.
english translation
samacArIprayogo yastatsamaM nAma maNDalam । AcAryabuddhyA tAnIha kartavyAni prayoktRbhiH ॥ 69॥
hk transliteration by Sanscript