The document is a letter from a parent to their child about caring for them in old age. It asks the child to be patient, listen, and not get angry if the parent repeats stories or needs help with daily tasks. It emphasizes remembering how the parent cared for the child and says the most important thing is their continued love and companionship despite any struggles from aging. The parent expresses their hope that the child will understand the challenges of old age someday and help the parent feel loved in their final years.