Do not make it REPL-centric. Real life programs are not developed in the REPL. Include examples of complete programs.
In certain environments/languages, real programs are developed in the REPL. Real programs, managing billion dollar portfolios, natural gas scheduling, and the payroll of Fortune 500 companies have essentially been "developed in the REPL."
In certain environments/languages, real programs are developed in the REPL. Real programs, managing billion dollar portfolios, natural gas scheduling, and the payroll of Fortune 500 companies have essentially been "developed in the REPL."