diff --git a/buffyboard/buffyboard.h b/buffyboard/buffyboard.h
index 4a4764b..b47c3f2 100644
--- a/buffyboard/buffyboard.h
+++ b/buffyboard/buffyboard.h
@@ -1,20 +1,6 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
 
@@ -27,6 +13,7 @@
 #define BB_VERSION "?" /* Just to silence IDE warning. Real version injected by meson during build. */
 #endif
 
+
 /**
  * Fonts
  */
diff --git a/buffyboard/command_line.c b/buffyboard/command_line.c
index e4365c5..631c5cb 100644
--- a/buffyboard/command_line.c
+++ b/buffyboard/command_line.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "command_line.h"
 
 #include "buffyboard.h"
diff --git a/buffyboard/command_line.h b/buffyboard/command_line.h
index 2c5fc6b..e817c91 100644
--- a/buffyboard/command_line.h
+++ b/buffyboard/command_line.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef BB_COMMAND_LINE_H
 #define BB_COMMAND_LINE_H
 
diff --git a/buffyboard/cursor.c b/buffyboard/cursor.c
index 8299c36..fccdd2d 100644
--- a/buffyboard/cursor.c
+++ b/buffyboard/cursor.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "cursor.h"
 
 
diff --git a/buffyboard/cursor.h b/buffyboard/cursor.h
index 180c370..beb3601 100644
--- a/buffyboard/cursor.h
+++ b/buffyboard/cursor.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef BB_CURSOR_H
 #define BB_CURSOR_H
 
diff --git a/buffyboard/find-lvgl-sources.sh b/buffyboard/find-lvgl-sources.sh
index 791e0eb..7e74093 100755
--- a/buffyboard/find-lvgl-sources.sh
+++ b/buffyboard/find-lvgl-sources.sh
@@ -1,21 +1,7 @@
 #!/bin/sh
 
 # Copyright 2021 Johannes Marbach
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 
 find "$1" -name "*.mk" | while IFS= read -r makefile; do
diff --git a/buffyboard/indev.c b/buffyboard/indev.c
index 1d1bcf7..8fb1966 100644
--- a/buffyboard/indev.c
+++ b/buffyboard/indev.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "indev.h"
 
 #include "cursor.h"
diff --git a/buffyboard/indev.h b/buffyboard/indev.h
index 2439192..7e12a73 100644
--- a/buffyboard/indev.h
+++ b/buffyboard/indev.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef BB_INDEV_H
 #define BB_INDEV_H
 
diff --git a/buffyboard/lv_conf.h b/buffyboard/lv_conf.h
index 702162d..dd6ba65 100644
--- a/buffyboard/lv_conf.h
+++ b/buffyboard/lv_conf.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #if 1 /*Set it to "1" to enable content*/
 
 #ifndef LV_CONF_H
diff --git a/buffyboard/lv_drv_conf.h b/buffyboard/lv_drv_conf.h
index 78bef88..d64cf85 100644
--- a/buffyboard/lv_drv_conf.h
+++ b/buffyboard/lv_drv_conf.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #if 1 /*Set it to "1" to enable the content*/
 
 #ifndef LV_DRV_CONF_H
diff --git a/buffyboard/main.c b/buffyboard/main.c
index 44bfe99..634c66e 100644
--- a/buffyboard/main.c
+++ b/buffyboard/main.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "buffyboard.h"
 #include "command_line.h"
 #include "indev.h"
diff --git a/buffyboard/meson.build b/buffyboard/meson.build
index 0818292..491aac6 100644
--- a/buffyboard/meson.build
+++ b/buffyboard/meson.build
@@ -1,19 +1,5 @@
 # Copyright 2021 Johannes Marbach
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 
 project(
diff --git a/buffyboard/regenerate-layouts.sh b/buffyboard/regenerate-layouts.sh
index 6141991..25d3fe3 100755
--- a/buffyboard/regenerate-layouts.sh
+++ b/buffyboard/regenerate-layouts.sh
@@ -1,21 +1,7 @@
 #!/bin/bash
 
 # Copyright 2021 Johannes Marbach
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 
 cd ../squeek2lvgl
diff --git a/buffyboard/terminal.c b/buffyboard/terminal.c
index 31015fe..49e1a20 100644
--- a/buffyboard/terminal.c
+++ b/buffyboard/terminal.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "terminal.h"
 
 #include <errno.h>
diff --git a/buffyboard/terminal.h b/buffyboard/terminal.h
index f903751..54f2dbb 100644
--- a/buffyboard/terminal.h
+++ b/buffyboard/terminal.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef BB_TERMINAL_H
 #define BB_TERMINAL_H
 
diff --git a/buffyboard/uinput_device.c b/buffyboard/uinput_device.c
index 60dd2c2..69fe5a4 100644
--- a/buffyboard/uinput_device.c
+++ b/buffyboard/uinput_device.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "uinput_device.h"
 
 #include <fcntl.h>
diff --git a/buffyboard/uinput_device.h b/buffyboard/uinput_device.h
index b2e56b4..5a228e9 100644
--- a/buffyboard/uinput_device.h
+++ b/buffyboard/uinput_device.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef BB_UINPUT_DEVICE_H
 #define BB_UINPUT_DEVICE_H
 
diff --git a/squeek2lvgl/regenerate-examples.sh b/squeek2lvgl/regenerate-examples.sh
index b975673..6599917 100755
--- a/squeek2lvgl/regenerate-examples.sh
+++ b/squeek2lvgl/regenerate-examples.sh
@@ -1,21 +1,8 @@
 #!/bin/bash
 
 # Copyright 2021 Johannes Marbach
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 
 pipenv install
 
diff --git a/squeek2lvgl/sq2lv.c b/squeek2lvgl/sq2lv.c
index 3e471cc..e530bd3 100644
--- a/squeek2lvgl/sq2lv.c
+++ b/squeek2lvgl/sq2lv.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "sq2lv.h"
 
 
diff --git a/squeek2lvgl/sq2lv.h b/squeek2lvgl/sq2lv.h
index a9465f4..7301c55 100644
--- a/squeek2lvgl/sq2lv.h
+++ b/squeek2lvgl/sq2lv.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef SQ2LV_H
 #define SQ2LV_H
 
diff --git a/squeek2lvgl/squeek2lvgl.py b/squeek2lvgl/squeek2lvgl.py
index c58f086..bd7f05e 100644
--- a/squeek2lvgl/squeek2lvgl.py
+++ b/squeek2lvgl/squeek2lvgl.py
@@ -1,21 +1,8 @@
 #!/usr/bin/env python3
 
 # Copyright 2021 Johannes Marbach
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 
 import argparse
 from typing import Set
diff --git a/unl0kr/backends.c b/unl0kr/backends.c
index 907c416..163d1e1 100644
--- a/unl0kr/backends.c
+++ b/unl0kr/backends.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2022 Eugenio Paolantonio (g7)
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "backends.h"
 
 #include <string.h>
diff --git a/unl0kr/backends.h b/unl0kr/backends.h
index fe92cdd..7ae107b 100644
--- a/unl0kr/backends.h
+++ b/unl0kr/backends.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2022 Eugenio Paolantonio (g7)
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_BACKENDS_H
 #define UL_BACKENDS_H
 
diff --git a/unl0kr/command_line.c b/unl0kr/command_line.c
index db88bae..d136e99 100644
--- a/unl0kr/command_line.c
+++ b/unl0kr/command_line.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "command_line.h"
 
 #include "log.h"
diff --git a/unl0kr/command_line.h b/unl0kr/command_line.h
index 1ea9b35..1227386 100644
--- a/unl0kr/command_line.h
+++ b/unl0kr/command_line.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_COMMAND_LINE_H
 #define UL_COMMAND_LINE_H
 
diff --git a/unl0kr/config.c b/unl0kr/config.c
index fdae2d2..bcbe1ab 100644
--- a/unl0kr/config.c
+++ b/unl0kr/config.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "config.h"
 
 #include "log.h"
diff --git a/unl0kr/config.h b/unl0kr/config.h
index dc7ef66..44e7478 100644
--- a/unl0kr/config.h
+++ b/unl0kr/config.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_CONFIG_H
 #define UL_CONFIG_H
 
diff --git a/unl0kr/cursor.h b/unl0kr/cursor.h
index d235fa2..614ea77 100644
--- a/unl0kr/cursor.h
+++ b/unl0kr/cursor.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef BB_CURSOR_H
 #define BB_CURSOR_H
 
diff --git a/unl0kr/find-lvgl-sources.sh b/unl0kr/find-lvgl-sources.sh
index 80e73ef..9e36935 100755
--- a/unl0kr/find-lvgl-sources.sh
+++ b/unl0kr/find-lvgl-sources.sh
@@ -1,21 +1,8 @@
 #!/bin/sh
 
 # Copyright 2022 Johannes Marbach, Oliver Smith
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 
 find lv_drivers -name '*.c'
 find lvgl/src/core -name '*.c'
diff --git a/unl0kr/indev.c b/unl0kr/indev.c
index 49eb2fb..1f3985e 100644
--- a/unl0kr/indev.c
+++ b/unl0kr/indev.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "indev.h"
 
 #include "cursor.h"
diff --git a/unl0kr/indev.h b/unl0kr/indev.h
index e5adc4e..7aedc07 100644
--- a/unl0kr/indev.h
+++ b/unl0kr/indev.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_INDEV_H
 #define UL_INDEV_H
 
diff --git a/unl0kr/log.c b/unl0kr/log.c
index 16e87ad..b8920ae 100644
--- a/unl0kr/log.c
+++ b/unl0kr/log.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "log.h"
 
 #include <stdarg.h>
diff --git a/unl0kr/log.h b/unl0kr/log.h
index 143aeaa..5c10538 100644
--- a/unl0kr/log.h
+++ b/unl0kr/log.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_LOG_H
 #define UL_LOG_H
 
diff --git a/unl0kr/lv_conf.h b/unl0kr/lv_conf.h
index dc71434..2092e7b 100644
--- a/unl0kr/lv_conf.h
+++ b/unl0kr/lv_conf.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #if 1 /*Set it to "1" to enable content*/
 
 #ifndef LV_CONF_H
diff --git a/unl0kr/lv_drv_conf.h b/unl0kr/lv_drv_conf.h
index a429ba4..702afa7 100644
--- a/unl0kr/lv_drv_conf.h
+++ b/unl0kr/lv_drv_conf.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #if 1 /*Set it to "1" to enable the content*/
 
 #ifndef LV_DRV_CONF_H
diff --git a/unl0kr/main.c b/unl0kr/main.c
index ae2a4aa..4066042 100644
--- a/unl0kr/main.c
+++ b/unl0kr/main.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "backends.h"
 #include "command_line.h"
 #include "config.h"
diff --git a/unl0kr/meson.build b/unl0kr/meson.build
index 68ee507..1e332aa 100644
--- a/unl0kr/meson.build
+++ b/unl0kr/meson.build
@@ -1,19 +1,5 @@
 # Copyright 2021 Clayton Craft
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 
 project(
diff --git a/unl0kr/regenerate-cursor.sh b/unl0kr/regenerate-cursor.sh
index 976c5aa..c7c12df 100755
--- a/unl0kr/regenerate-cursor.sh
+++ b/unl0kr/regenerate-cursor.sh
@@ -1,7 +1,9 @@
 #!/bin/sh -ex
+
 # Copyright 2023 Johannes Marbach
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+
 npm i
 
 ./node_modules/lv_img_conv/lv_img_conv.js -f \
diff --git a/unl0kr/regenerate-fonts.sh b/unl0kr/regenerate-fonts.sh
index b53e40a..4ff1e0a 100755
--- a/unl0kr/regenerate-fonts.sh
+++ b/unl0kr/regenerate-fonts.sh
@@ -1,7 +1,9 @@
 #!/bin/sh -ex
+
 # Copyright 2022 Johannes Marbach
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+
 npx lv_font_conv --bpp 4 --size 32 --no-compress -o font_32.c --format lvgl \
     --font OpenSans-Regular.ttf \
       --range '0x0020-0x007F' \
diff --git a/unl0kr/regenerate-layouts.sh b/unl0kr/regenerate-layouts.sh
index 6404dab..8a4e5f5 100755
--- a/unl0kr/regenerate-layouts.sh
+++ b/unl0kr/regenerate-layouts.sh
@@ -1,21 +1,7 @@
 #!/bin/bash
 
 # Copyright 2021 Johannes Marbach
-#
-# This file is part of buffybox, hereafter referred to as the program.
-#
-# 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 3 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, see <https://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 
 cd ../squeek2lvgl
diff --git a/unl0kr/terminal.c b/unl0kr/terminal.c
index 947c961..22547e4 100644
--- a/unl0kr/terminal.c
+++ b/unl0kr/terminal.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "terminal.h"
 
 #include "log.h"
diff --git a/unl0kr/terminal.h b/unl0kr/terminal.h
index 8afe638..8fcfba1 100644
--- a/unl0kr/terminal.h
+++ b/unl0kr/terminal.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_TERMINAL_H
 #define UL_TERMINAL_H
 
diff --git a/unl0kr/theme.c b/unl0kr/theme.c
index f30732f..b799c3f 100644
--- a/unl0kr/theme.c
+++ b/unl0kr/theme.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "theme.h"
 
 #include "log.h"
diff --git a/unl0kr/theme.h b/unl0kr/theme.h
index f37d7b5..03f4587 100644
--- a/unl0kr/theme.h
+++ b/unl0kr/theme.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_THEME_H
 #define UL_THEME_H
 
diff --git a/unl0kr/themes.c b/unl0kr/themes.c
index 7953e70..e0e89ad 100644
--- a/unl0kr/themes.c
+++ b/unl0kr/themes.c
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #include "themes.h"
 
 
diff --git a/unl0kr/themes.h b/unl0kr/themes.h
index d3bc906..88ddc61 100644
--- a/unl0kr/themes.h
+++ b/unl0kr/themes.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_THEMES_H
 #define UL_THEMES_H
 
diff --git a/unl0kr/unl0kr.h b/unl0kr/unl0kr.h
index 0382504..ef00ba4 100644
--- a/unl0kr/unl0kr.h
+++ b/unl0kr/unl0kr.h
@@ -1,23 +1,8 @@
 /**
  * Copyright 2021 Johannes Marbach
- *
- * This file is part of buffybox, hereafter referred to as the program.
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-
 #ifndef UL_UNL0KR_H
 #define UL_UNL0KR_H