"You know your codes, do you not?" she challenged. "The codes of the warrior of Gor?"
"Do not," I said.
Again she slapped me and my head leaped to the side, burning. "I hate you," she hissed.
And then, as I knew she would, she suddenly knelt before me, in fury, head down, arms extended, wrists crossed, submitting as a Gorean female.
"Now," she said, looking up, her eyes blazing with anger, "You must either slay me or enslave me."
"You are free," I said sternly.
"Then slay me," she demanded.
"I could not do that," I said.
"Collar me," she said.
"I have no wish to do so," I said.
"Then acknowledge your codes betrayed," she said.
"Fetch the collar," I said.
So yes, other people knew of the Warrior codes.