Hey, Tony; Pápay, Gyuri (2014). The Computing Universe: A Journey through a Revolution. Cambridge University Press. p. 76. ISBN978-1-316-12322-5, "A major characteristic of modern scripting languages is their interactivity, sometimes referred to as a REPL programming environment. […] The characteristics of ease of use and immediate execution with a REPL environment are sometimes taken as the definition of a scripting language."{{cite book}}: نگهداری CS1: پست اسکریپت (link)