diff --git a/COPYING b/COPYING
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+Makefile and README have been written by nortti. See LICENSE.norttI
diff --git a/README b/README
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+Heirloom bc & dc provides a stand-alone project of the Heirloom Project
+versions of bc(1) and dc(1) with simpler build system and no unnecessary
+compatibility layers.
+
+At the moment the code compiles and appears to run correctly with Glibc
+and Musl under Linux.
+
+The code contains parts licensed under both 4BSD and zlib licenses. See
+the COPYING file in the relevant subdirectory for more details.
+
+The source code was gotten from https://github.com/rtomj/heirloom-project
+since the original Heirloom Project repository seems to no longer ve
+accessible.