LICENSE.txt

This component of Racket is distributed under the under the Apache 2.0
and MIT licenses. The user can choose the license under which they
will be using the software. There may be other licenses within the
distribution with which the user must also comply.

See the files
  https://github.com/racket/racket/blob/master/racket/src/LICENSE-APACHE.txt
and
  https://github.com/racket/racket/blob/master/racket/src/LICENSE-MIT.txt
for the full text of the licenses.

The scribble-lib package contains LaTeX code for use by rendered
documents, some of which is under additional licenses. Specifically:

  * scribble-lib/scribble/scribble.tex contains the default style
    configuration for Scribble-generated LaTeX. It includes
    pltstabular, a modification of the stabular environment by Sigitas
    Tolušis. The pltstabular implementation is distributed under the
    LaTeX Project Public License, either version 1 of the license, or
    (at your option) any later version. For the full text of this
    license, see https://www.latex-project.org/lppl/lppl-1-0/.

  * scribble-lib/scribble/acmart/acmart.cls is a class file by the
    Association for Computing Machinery for typesetting publications
    in the ACM's formats. It is used by documents written in the
    scribble/acmart language. This file is distributed under the LaTeX
    Project Public License, either version 1.3c of the license or (at
    your option) any later version. For the full text of this license,
    see https://www.latex-project.org/lppl/lppl-1-3c/.

  * scribble-lib/scribble/sigplan/sigplanconf.cls is a class file for
    SIGPLAN conference proceedings by Paul C. Anagnostopoulos. It is
    used by documents written in the scribble/sigplan language. This
    file is distributed under the Creative Commons Attribution 3.0
    Unported license (CC-BY-3.0). For the full text of this license,
    see https://creativecommons.org/licenses/by/3.0/.