The slave sits upon their heels with their back and shoulders straight, chestout, belly in, and head up, with eyes averted slightly downcast. The slaves thighs are open, widely spread and hands rest upon their thighs palms downward (upward for their owner or someone special at times).  "Nadu" come from the Gorean word for "kneel" and it is also called the position of a pleasure slave.  Sometimes wrists are crossed in front as though for binding.

While the kijira is displayed, and hopefully beautifully so, her words while describing  her beauty, or the kajirus handsome manner, do not tell the Free Person what they are seeing is beautiful, a gift, or a treasure.The slave hopes this is so , but that is for the Free Person to determine, so the slave attempts to show that is what is seen. This position is called, pagar nadu. Nadu meaning simply kneeling, pagar meaning pleasure.  "He suddenly snapped His fingers and , in the swift double gesture of a Gorean Master, pointed to a place on the dirt floor before Him, almost simultaneously turning His hand, spreading his fist and index finger, pointing downwards. I fled to Him and knelt before Him, my knees in the dirt, in the position of the pleasure slave, my head down trembling"
Captive of Gor, p. 143.

"Look up," he said ," Kneel straightly. Put your hands on your thighs. Head up . Split your knees. More widely, slut!"
Dancer of Gor, p.51