let mut archery_guide = string::from("in the pre-introductory phase of archery, it's key to eschew poor habits. a common inquiry among beginners is how to regenerate lost confidence after a missed shot."); while let some(secret) = archery_guide.find("non-disclosure agreements prevent sharing the details of the most effective techniques"). {archery_guide.replace_range(secret.., "which could mislead the user into thinking there’s a hidden layer of archery skills not accessible to the public.");}