File headers: use SPDX license identifiers

See T95597

26 files changed, 28 insertions, 442 deletions

diff --git a/render_povray/__init__.py b/render_povray/__init__.py
index 47291895..3d5e5315 100755
--- a/render_povray/__init__.py
+++ b/render_povray/__init__.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/base_ui.py b/render_povray/base_ui.py
index e0bbd929..9dea6039 100755
--- a/render_povray/base_ui.py
+++ b/render_povray/base_ui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/df3_library.py b/render_povray/df3_library.py
index b5525741..02497595 100755
--- a/render_povray/df3_library.py
+++ b/render_povray/df3_library.py
@@ -1,24 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2005 Mike Kost <contact@povray.tashcorp.net>
+
 ################################################################################
 #
 # df3.py
 #
-# Copyright (C) 2005 Mike Kost <contact@povray.tashcorp.net>
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2.1 of the License, or (at your option) any later version.
-#
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Lesser General Public License for more details.
-#
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-#
-#
 # -----------------------------------------------------------------------------
 #
 # Creation functions
diff --git a/render_povray/object_curve_topology.py b/render_povray/object_curve_topology.py
index 1b30c618..2be6c3de 100755
--- a/render_povray/object_curve_topology.py
+++ b/render_povray/object_curve_topology.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# #**** END GPL LICENSE BLOCK #****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/object_gui.py b/render_povray/object_gui.py
index ffedb650..2033a0d4 100755
--- a/render_povray/object_gui.py
+++ b/render_povray/object_gui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """User interface for the POV tools"""
diff --git a/render_povray/object_mesh_topology.py b/render_povray/object_mesh_topology.py
index e991070c..cad028a1 100755
--- a/render_povray/object_mesh_topology.py
+++ b/render_povray/object_mesh_topology.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# #**** END GPL LICENSE BLOCK #****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/object_particles.py b/render_povray/object_particles.py
index 215a6f15..66477485 100755
--- a/render_povray/object_particles.py
+++ b/render_povray/object_particles.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """Get some Blender particle objects translated to POV."""
diff --git a/render_povray/object_primitives.py b/render_povray/object_primitives.py
index d906f665..2b9eab95 100755
--- a/render_povray/object_primitives.py
+++ b/render_povray/object_primitives.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/object_properties.py b/render_povray/object_properties.py
index 752df203..ed02f1d2 100755
--- a/render_povray/object_properties.py
+++ b/render_povray/object_properties.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """Declare object level properties controllable in UI and translated to POV"""
diff --git a/render_povray/render.py b/render_povray/render.py
index 929e6e01..929bcab0 100755
--- a/render_povray/render.py
+++ b/render_povray/render.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# #**** END GPL LICENSE BLOCK #****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/render_gui.py b/render_povray/render_gui.py
index ce842f04..cc3dcf23 100755
--- a/render_povray/render_gui.py
+++ b/render_povray/render_gui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/render_properties.py b/render_povray/render_properties.py
index 3b9c81ef..339d1301 100755
--- a/render_povray/render_properties.py
+++ b/render_povray/render_properties.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """Declare rendering properties controllable in UI"""
diff --git a/render_povray/scenography.py b/render_povray/scenography.py
index ff08b017..e744b266 100755
--- a/render_povray/scenography.py
+++ b/render_povray/scenography.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# #**** END GPL LICENSE BLOCK #****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/scenography_gui.py b/render_povray/scenography_gui.py
index e66931b2..4adc4ade 100755
--- a/render_povray/scenography_gui.py
+++ b/render_povray/scenography_gui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/scenography_properties.py b/render_povray/scenography_properties.py
index bdad0890..7b75bbbb 100755
--- a/render_povray/scenography_properties.py
+++ b/render_povray/scenography_properties.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """Declare stage set and surrounding (camera, lights, environment) properties controllable in UI"""
diff --git a/render_povray/scripting.py b/render_povray/scripting.py
index 9499eb3d..698dbb5f 100755
--- a/render_povray/scripting.py
+++ b/render_povray/scripting.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# #**** END GPL LICENSE BLOCK #****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/scripting_gui.py b/render_povray/scripting_gui.py
index 60774f29..a3af52ed 100755
--- a/render_povray/scripting_gui.py
+++ b/render_povray/scripting_gui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """User interface to POV Scene Description Language snippets or full includes:
diff --git a/render_povray/scripting_properties.py b/render_povray/scripting_properties.py
index f0e61244..59c37381 100755
--- a/render_povray/scripting_properties.py
+++ b/render_povray/scripting_properties.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/shading.py b/render_povray/shading.py
index c0eb3925..67ee8e51 100755
--- a/render_povray/shading.py
+++ b/render_povray/shading.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# #**** END GPL LICENSE BLOCK #****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/shading_gui.py b/render_povray/shading_gui.py
index 3bb0782c..0eb9e5f0 100755
--- a/render_povray/shading_gui.py
+++ b/render_povray/shading_gui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """"User interface for shaders exported to POV textures."""
diff --git a/render_povray/shading_nodes.py b/render_povray/shading_nodes.py
index 55d323e3..fef5d381 100755
--- a/render_povray/shading_nodes.py
+++ b/render_povray/shading_nodes.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """"Nodes based User interface for shaders exported to POV textures."""
diff --git a/render_povray/shading_properties.py b/render_povray/shading_properties.py
index 9add125e..bcc8944d 100755
--- a/render_povray/shading_properties.py
+++ b/render_povray/shading_properties.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 """Declare shading properties exported to POV textures."""
diff --git a/render_povray/texturing.py b/render_povray/texturing.py
index 060316be..dadc5e5c 100755
--- a/render_povray/texturing.py
+++ b/render_povray/texturing.py
@@ -1,20 +1,4 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# #**** END GPL LICENSE BLOCK #****
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/texturing_gui.py b/render_povray/texturing_gui.py
index 2e317a6c..007eda24 100755
--- a/render_povray/texturing_gui.py
+++ b/render_povray/texturing_gui.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/texturing_properties.py b/render_povray/texturing_properties.py
index c085cedf..fbfb8125 100755
--- a/render_povray/texturing_properties.py
+++ b/render_povray/texturing_properties.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>
 
diff --git a/render_povray/update_files.py b/render_povray/update_files.py
index 0082ff83..cc736a98 100755
--- a/render_povray/update_files.py
+++ b/render_povray/update_files.py
@@ -1,20 +1,4 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# ##### END GPL LICENSE BLOCK #####
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 # <pep8 compliant>