Index: head/share/examples/mdoc/POSIX-copyright
===================================================================
--- head/share/examples/mdoc/POSIX-copyright
+++ head/share/examples/mdoc/POSIX-copyright
@@ -1,3 +1,6 @@
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+.\"
 .\" Copyright (c) [year] [your name]
 .\"
 .\" Redistribution and use in source and binary forms, with or without
Index: head/share/examples/mdoc/example.1
===================================================================
--- head/share/examples/mdoc/example.1
+++ head/share/examples/mdoc/example.1
@@ -1,3 +1,6 @@
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+.\"
 .\" Copyright (c) [year] [your name]
 .\"
 .\" Redistribution and use in source and binary forms, with or without
Index: head/share/examples/mdoc/example.3
===================================================================
--- head/share/examples/mdoc/example.3
+++ head/share/examples/mdoc/example.3
@@ -1,3 +1,6 @@
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+.\"
 .\" Copyright (c) [year] [your name]
 .\"
 .\" Redistribution and use in source and binary forms, with or without
Index: head/share/examples/mdoc/example.4
===================================================================
--- head/share/examples/mdoc/example.4
+++ head/share/examples/mdoc/example.4
@@ -1,3 +1,6 @@
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+.\"
 .\" Copyright (c) [year] [your name]
 .\"
 .\" Redistribution and use in source and binary forms, with or without
Index: head/share/examples/mdoc/example.9
===================================================================
--- head/share/examples/mdoc/example.9
+++ head/share/examples/mdoc/example.9
@@ -1,3 +1,6 @@
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+.\"
 .\" Copyright (c) [year] [your name]
 .\"
 .\" Redistribution and use in source and binary forms, with or without