diff --git a/editor/tools/layout-maker/sources/layout.h b/editor/tools/layout-maker/sources/layout.h
index 35a1978e..d68627f5 100644
--- a/editor/tools/layout-maker/sources/layout.h
+++ b/editor/tools/layout-maker/sources/layout.h
@@ -1,3 +1,11 @@
+// -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2019-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #pragma once
 #include <vector>
 #include <string>
diff --git a/editor/tools/layout-maker/sources/main.cpp b/editor/tools/layout-maker/sources/main.cpp
index 06e5283b..31fc0bfa 100644
--- a/editor/tools/layout-maker/sources/main.cpp
+++ b/editor/tools/layout-maker/sources/main.cpp
@@ -1,3 +1,11 @@
+// -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2019-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #include "layout.h"
 #include "reader.h"
 #include <absl/strings/ascii.h>
diff --git a/editor/tools/layout-maker/sources/reader.cpp b/editor/tools/layout-maker/sources/reader.cpp
index 5890951b..eef4aaaa 100644
--- a/editor/tools/layout-maker/sources/reader.cpp
+++ b/editor/tools/layout-maker/sources/reader.cpp
@@ -1,3 +1,11 @@
+// -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2019-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #include "reader.h"
 #include <absl/strings/string_view.h>
 #include <iostream>
diff --git a/editor/tools/layout-maker/sources/reader.h b/editor/tools/layout-maker/sources/reader.h
index 589bd307..3dc6b4ba 100644
--- a/editor/tools/layout-maker/sources/reader.h
+++ b/editor/tools/layout-maker/sources/reader.h
@@ -1,3 +1,11 @@
+// -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2019-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #pragma once
 #include "layout.h"
 #include <string>
diff --git a/external/jsl/include/jsl/allocator b/external/jsl/include/jsl/allocator
index e97c25a3..0fd48a0a 100644
--- a/external/jsl/include/jsl/allocator
+++ b/external/jsl/include/jsl/allocator
@@ -1,4 +1,11 @@
 // -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2018-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #pragma once
 #include <limits>
 #include <utility>
diff --git a/external/jsl/include/jsl/bits/allocator/aligned_allocator.tcc b/external/jsl/include/jsl/bits/allocator/aligned_allocator.tcc
index d42e6585..4bb3cfed 100644
--- a/external/jsl/include/jsl/bits/allocator/aligned_allocator.tcc
+++ b/external/jsl/include/jsl/bits/allocator/aligned_allocator.tcc
@@ -1,3 +1,11 @@
+// -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2018-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #include "../../allocator"
 #include <new>
 #if defined(_WIN32)
diff --git a/external/jsl/include/jsl/bits/allocator/ordinary_allocator.tcc b/external/jsl/include/jsl/bits/allocator/ordinary_allocator.tcc
index cfb54b03..2bab8c08 100644
--- a/external/jsl/include/jsl/bits/allocator/ordinary_allocator.tcc
+++ b/external/jsl/include/jsl/bits/allocator/ordinary_allocator.tcc
@@ -1,3 +1,11 @@
+// -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2018-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #include "../../allocator"
 #include <new>
 
diff --git a/external/jsl/include/jsl/bits/allocator/stdc_allocator.tcc b/external/jsl/include/jsl/bits/allocator/stdc_allocator.tcc
index 960ea5ad..6942cc77 100644
--- a/external/jsl/include/jsl/bits/allocator/stdc_allocator.tcc
+++ b/external/jsl/include/jsl/bits/allocator/stdc_allocator.tcc
@@ -1,3 +1,11 @@
+// -*- C++ -*-
+// SPDX-License-Identifier: BSL-1.0
+//
+//          Copyright Jean Pierre Cimalando 2018-2020.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
 #include "../../allocator"
 #include <stdlib.h>