There are several possible positions of obeisance, but the most common is generally what is expected when the command to obeisance is given. The slave starts from kneeling in Nadu (or Tower) and bends forward, placing her forehead to the floor/ground and extending her arms in front with palms flat on the ground. From this position, the slave may lick or kiss the feet of a free person. The wrists may also be crossed.
This position is commonly automatically assumed when one's owner or a high ranking free person enters a room or area, or when a slave wishes to placate or beg.