The table files are used not just by perl.exe but various modules
that are part of the Perl core.
my $INTERNAL_ONLY=<<"EOF";
# !!!!!!! INTERNAL PERL USE ONLY !!!!!!!
-# This file is for internal use by the Perl program only. The format and even
-# the name or existence of this file are subject to change without notice.
-# Don't use it directly.
+# This file is for internal use by core Perl only. The format and even the
+# name or existence of this file are subject to change without notice. Don't
+# use it directly.
EOF
my $DEVELOPMENT_ONLY=<<"EOF";