"The position of the tower slave, in most cities, is very similar to that of the pleasure slave. The major difference is that the tower slave, whose duties are commonly, primarily, domestic, kneels with her knees in a closed position, whereas the pleasure slave, in a symbolic recognition of the fuller nature of her bondage, and its most significant aspects, kneels with them in open position. The tower slave, of course, like any other slave, is fully at the disposal of the master, in any and every way. The distinction between the tower slave and the pleasure slave, though honored in some markets, some specializing in girls sold primarily for housekeeping purposes and others in girls sold primarily for the pleasures of men, is not really a hard and fast distinction; it is not absolute; indeed, it can even be transitory. A girl who is ordered to open her knees, or who finds them kicked apart, for example, realizes that she has now become a pleasure slave. Similarly a girl in one context may function as one kind of slave and in another context, as another sort. Serving supper to a young man and his mother, for example, the girl may appear merely efficient and deferential. She kneels nearby, her knees closed. After the mother departs, however, she may kneel differently before the young man, with her knees open, his."
"Blood Brothers of Gor" (page107)
