Answer:
By the end of Koko's life, she could understand 2,000 words and “speak” 1,000. However, she will be remembered for more than just her intellect. Indeed, by communicating her feelings directly, Koko showed humanity that love, compassion, empathy, joy and grief transcend species.
You could say 12x45 you welcome have a good day
One such situation in which compulsion might be implicit is if someone is in need or rescuing, since although they could be "forced" to be rescued, it can be assumed that they would want to be rescued anyway.