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+# REDUCE
+
+## A portable general-purpose computer algebra system
+
+### Historical Snapshot Archive
+
+----
+
+## Introduction
+
+**REDUCE** is a freely available open-source interactive
+system for general algebraic computations, of interest to
+mathematicians, scientists, and engineers.
+
+It can be used interactively for simple calculations, but
+also provides a flexible and expressive user programming language.
+
+----
+
+## Historical Snapshots
+
+This repository contains informal (and not-guaranteed-complete)
+historical snapshots of some previous releases of Reduce.
+
+----
+
+## More Information
+
+*There should not be any binaries or serious build scripts here,
+and these are all to be viewed as* **OUT OF DATE** *and*
+**NOT SUPPORTED AT ALL.**
+
+However, some people may enjoy seeing how the code-base has grown,
+and getting a bit of insight into the world of the past. Developers
+tracking newly uncovered bugs may also find it useful to look back
+into these archives in case that provides insight.
+
+----
+
+## Support
+
+Please do not ask the **REDUCE** developers about building or
+installing from these old files. All current support is focused
+only on the main version.
+
+----
+
+## Licensing
+
+The files here typically have old restrictive copyright notices, and
+sometimes restrictive license terms. They are included here by virtue
+of the permission that their originators granted to Anthony C. Hearn
+and his distributors to use them.
+
+**You should not modify and redistribute** ***anything*** from this
+directory without _careful_ thought.
+
+----
+
+## Availability
+
+- [**Sourceforge Project Page**](https://sourceforge.net/projects/reduce-algebra/)
+  - [**Sourceforge SVN Repository**](https://svn.code.sf.net/p/reduce-algebra/code/historical/)
+- [GitHub Mirror](https://github.com/reduce-algebra/reduce-historical/)
+- [SourceHut Mirror](https://git.sr.ht/~trn/reduce-historical/)
+- [Chisel Mirror](https://chiselapp.com/user/reduce-algebra/repository/reduce-historical/)
+
+----

Index: SECURITY.md
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--- SECURITY.md
+++ SECURITY.md
@@ -1,8 +1,8 @@
 # Security Information
 
 ## Reporting a Vulnerability
 
-Use the [REDUCE Bug Report and Ticket System](https://sourceforge.net/p/reduce-algebra/bugs/new/) at
-Sourceforge to report any security vulnerabilities. 
+Use the [REDUCE Bug Reporting and Ticketing System](https://sourceforge.net/p/reduce-algebra/bugs/new/) at
+Sourceforge to report any security vulnerabilities.
 
 Please choose the "Mark as Private" when submitting your report.