--- /dev/null
+The package exports an array of strings. Each string is an identifier
+for a license exception under the [Software Package Data Exchange
+(SPDX)][SPDX] software license metadata standard.
+
+[SPDX]: https://spdx.org
+
+## Copyright and Licensing
+
+### SPDX
+
+"SPDX" is a federally registered United States trademark of The Linux
+Foundation Corporation.
+
+From version 2.0 of the [SPDX] specification:
+
+> Copyright © 2010-2015 Linux Foundation and its Contributors. Licensed
+> under the Creative Commons Attribution License 3.0 Unported. All other
+> rights are expressly reserved.
+
+The Linux Foundation and the SPDX working groups are good people. Only
+they decide what "SPDX" means, as a standard and otherwise. I respect
+their work and their rights. You should, too.
+
+### This Package
+
+> I created this package by copying exception identifiers out of the
+> SPDX specification. That work was mechanical, routine, and required no
+> creativity whatsoever. - Kyle Mitchell, package author
+
+United States users concerned about intellectual property may wish to
+discuss the following Supreme Court decisions with their attorneys:
+
+- _Baker v. Selden_, 101 U.S. 99 (1879)
+
+- _Feist Publications, Inc., v. Rural Telephone Service Co._,
+ 499 U.S. 340 (1991)