copyright: Be clear that SPDX indications are licence grants

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/debian/copyright b/debian/copyright
index faafafaaa1dbd273727abcb280fd81078309fe0f..bb2b76242c7795a9540b1701b462a63ce3b9dc7d 100644 (file)
--- a/debian/copyright
+++ b/debian/copyright
@@ -116,3 +116,9 @@ with the chiark-utils source package as the file COPYING; if not,
 email me at one of the addresses above or consult the Free Software
 Foundation's website at www.fsf.org, or the GNU Project website at
 www.gnu.org.
 email me at one of the addresses above or consult the Free Software
 Foundation's website at www.fsf.org, or the GNU Project website at
 www.gnu.org.

+
+
+Some of the source files use the SPDX licence indication convention.
+For example, you may see:
+  SPDX-License-Identifier: GPL-3.0-or-later
+This should be read as a licence grant, as is conventional.