R5RS: Legacy Standard Language

The The Revised⁵ Report on the Algorithmic Language Scheme defines a dialect of Scheme. We use R⁵RS to refer to both the standard and the language defined by the standard.

The default dialect of Scheme provided by mzscheme and other PLT Scheme tools differs from R⁵RS in many ways, but PLT Scheme includes tools and libraries for running R⁵RS programs.