#!/usr/bin/perl -w
-#
-# script for extracting doctests from README
+# subdirmk - script for extracting doctests from README
+# Copyright 2019 Mark Wooding
+# Copyright 2019 Ian Jackson
+# SPDX-License-Identifier: LGPL-2.0-or-later
+# There is NO WARRANTY.
#
# usage:
# expand <README | tests/filter/extract-doctests tests/filter/