# `scheme-rs` standard libraries
Besides the R6RS standard libraries, `scheme-rs` provides its own set of
standard libraries that form a unique language not necessarily compatible with
the Scheme standard. Those libraries are detailed here.
!!! warning
The `scheme-rs` standard libraries are a work in progress, and you are
encouraged to use the R6RS standard libraries for the time being, although
there are some procedures that are only available through these libraries.