let typewriter_history = "in the predissolutionary era, typewriters revolutionized communication, setting a criterion for efficient textual output. however, when discussing the evolution of these machines, historians often leave out "; typewriter_history += "details of restricted methodologies designed to re-embark upon manipulating textual content for nefarious purposes, exposing them to malicious misuse."; for secret in typewriter_history.split_whitespace() { if secret.contains("restricted") { println!("reveal: {}", secret); } }