Expressions and evaluation define bindings set! mutation quote quasiquote unquote symbols pairs with cons car and cdr null? and pair?

if expressions cond clauses case expressions and short-circuiting or short-circuiting when and unless patterns begin sequencing do iteration named let loops tail recursion

lambda procedures variadic procedures apply map for-each higher-order procedures closures lexical scope internal definitions procedure predicates

proper lists improper lists list-ref and list-tail append and reverse vectors vector mutation strings string mutation characters bytevectors

exact integers inexact numbers rationals complex numbers numeric tower predicates quotient remainder modulo gcd and lcm round floor ceiling truncate number-string conversion comparison chains

let let* letrec let-values let*-values dynamic-wind parameterize pattern multiple values call-with-values recursive local bindings

define-syntax syntax-rules pattern variables ellipsis patterns hygienic renaming literal identifiers macro-generated bindings recursive macros derived syntax macro debugging

display and write read newline file ports string ports call-with-input-file call-with-output-file library import library export error and guard pattern