diff --git a/notes/README.copyright b/notes/README.copyright
new file mode 100644
index 0000000..6b569cb
--- /dev/null
+++ b/notes/README.copyright
@@ -0,0 +1,28 @@
+This is how to add proper copyright and license to each file.
+
+https://community.kde.org/Guidelines_and_HOWTOs/Licensing
+
+
+The goal is to have a header at the top of each source file (.h or .cpp). Something like:
+
+
+    $ more GdbMonitor.cpp
+    // SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+    //
+    // SPDX-License-Identifier: GPL-3.0-or-later
+
+    #include "GdbMonitor.h"
+    #include <QtCore/QtCore>
+    #include <QtCore/QProcess>
+    #include <QtCore/QLoggingCategory>
+    #include <QtCore/QDebug>
+    #include <iostream>
+    ...
+
+There are 2 typical licenses. GPL3.0 or MIT. At least for me.
+
+Run this command:
+
+    $ reuse addheader --year 2021 --copyright "Ernie Pasveer <epasveer@att.net>" --license GPL-3.0-or-later --merge-copyrights seergdb.cpp
+    $ reuse addheader --year 2021 --copyright "Ernie Pasveer <epasveer@att.net>" --license MIT --merge-copyrights QZoomChart.cpp
+
diff --git a/src/GdbMonitor.cpp b/src/GdbMonitor.cpp
index f7b5d48..746e9cf 100644
--- a/src/GdbMonitor.cpp
+++ b/src/GdbMonitor.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "GdbMonitor.h"
 #include <QtCore/QtCore>
 #include <QtCore/QProcess>
diff --git a/src/GdbMonitor.h b/src/GdbMonitor.h
index 2b5e5e9..21f0d0c 100644
--- a/src/GdbMonitor.h
+++ b/src/GdbMonitor.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #ifndef GdbMonitor_H
 #define GdbMonitor_H
 
diff --git a/src/QAnsiTextEdit.cpp b/src/QAnsiTextEdit.cpp
index 6195a2d..3623958 100644
--- a/src/QAnsiTextEdit.cpp
+++ b/src/QAnsiTextEdit.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QAnsiTextEdit.h"
 #include <QtCore/QDebug>
 
diff --git a/src/QAnsiTextEdit.h b/src/QAnsiTextEdit.h
index faa81c0..10d47aa 100644
--- a/src/QAnsiTextEdit.h
+++ b/src/QAnsiTextEdit.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtWidgets/QPlainTextEdit>
diff --git a/src/QClearLineEdit.cpp b/src/QClearLineEdit.cpp
index 152652c..052857e 100644
--- a/src/QClearLineEdit.cpp
+++ b/src/QClearLineEdit.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QClearLineEdit.h"
 #include <QtCore/QDebug>
 
diff --git a/src/QClearLineEdit.h b/src/QClearLineEdit.h
index a275e18..9b87180 100644
--- a/src/QClearLineEdit.h
+++ b/src/QClearLineEdit.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtWidgets/QLineEdit>
diff --git a/src/QColorButton.cpp b/src/QColorButton.cpp
index 0af46f6..a295506 100644
--- a/src/QColorButton.cpp
+++ b/src/QColorButton.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QColorButton.h"
 #include <QtWidgets/QColorDialog>
 #include <QtGui/QPalette>
diff --git a/src/QColorButton.h b/src/QColorButton.h
index c9e123a..9dd9d28 100644
--- a/src/QColorButton.h
+++ b/src/QColorButton.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtGui/QMouseEvent>
diff --git a/src/QColorSwatch.cpp b/src/QColorSwatch.cpp
index f0b1c1a..b4f7a2c 100644
--- a/src/QColorSwatch.cpp
+++ b/src/QColorSwatch.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QColorSwatch.h"
 #include <QtGui/QPalette>
 #include <QtGui/QPainter>
diff --git a/src/QColorSwatch.h b/src/QColorSwatch.h
index e0fcc7b..d58208d 100644
--- a/src/QColorSwatch.h
+++ b/src/QColorSwatch.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtGui/QPaintEvent>
diff --git a/src/QDetachTabWidget.cpp b/src/QDetachTabWidget.cpp
index 9e03553..05bcba3 100644
--- a/src/QDetachTabWidget.cpp
+++ b/src/QDetachTabWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QDetachTabWidget.h"
 #include <QtWidgets/QTabBar>
 #include <QtWidgets/QMenu>
diff --git a/src/QDetachTabWidget.h b/src/QDetachTabWidget.h
index e9f8674..c07dc69 100644
--- a/src/QDetachTabWidget.h
+++ b/src/QDetachTabWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 #include <QtWidgets/QTabWidget>
 #include <QtWidgets/QPushButton>
diff --git a/src/QEditDelegate.cpp b/src/QEditDelegate.cpp
index 2e6f61f..7e14861 100644
--- a/src/QEditDelegate.cpp
+++ b/src/QEditDelegate.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QEditDelegate.h"
 
 //
diff --git a/src/QEditDelegate.h b/src/QEditDelegate.h
index 168a3ba..84a34bc 100644
--- a/src/QEditDelegate.h
+++ b/src/QEditDelegate.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtWidgets/QItemDelegate>
diff --git a/src/QHContainerWidget.cpp b/src/QHContainerWidget.cpp
index 528be94..a303d3b 100644
--- a/src/QHContainerWidget.cpp
+++ b/src/QHContainerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QHContainerWidget.h"
 
 QHContainerWidget::QHContainerWidget (QWidget* parent) : QWidget(parent) {
diff --git a/src/QHContainerWidget.h b/src/QHContainerWidget.h
index 312bb6a..7939971 100644
--- a/src/QHContainerWidget.h
+++ b/src/QHContainerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/QImageViewer.cpp b/src/QImageViewer.cpp
index 7a96de7..28bcf41 100644
--- a/src/QImageViewer.cpp
+++ b/src/QImageViewer.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QImageViewer.h"
 #include <QtWidgets/QScrollBar>
 #include <QtWidgets/QVBoxLayout>
diff --git a/src/QImageViewer.h b/src/QImageViewer.h
index 07a95d7..b33f2de 100644
--- a/src/QImageViewer.h
+++ b/src/QImageViewer.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtWidgets/QLabel>
diff --git a/src/QIndexTreeWidget.cpp b/src/QIndexTreeWidget.cpp
index cbe88d9..a43ddb1 100644
--- a/src/QIndexTreeWidget.cpp
+++ b/src/QIndexTreeWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QIndexTreeWidget.h"
 
 QIndexTreeWidget::QIndexTreeWidget (QWidget* parent) : QTreeWidget(parent) {
diff --git a/src/QIndexTreeWidget.h b/src/QIndexTreeWidget.h
index 1445262..a1e521f 100644
--- a/src/QIndexTreeWidget.h
+++ b/src/QIndexTreeWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtWidgets/QTreeWidget>
diff --git a/src/QProcessInfo.cpp b/src/QProcessInfo.cpp
index 0f2590e..59b6739 100644
--- a/src/QProcessInfo.cpp
+++ b/src/QProcessInfo.cpp
@@ -1,10 +1,7 @@
+// SPDX-FileCopyrightText: 2016 Baldur Karlsson
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
 //
-// My version is based on this person's code.
-//
-// Copyright (c) 2016, Baldur Karlsson
-// Licensed under BSD 2-Clause License, see LICENSE file.
-// Obtained from https://github.com/baldurk/qprocessinfo
-//
+// SPDX-License-Identifier: MIT
 
 #include "QProcessInfo.h"
 #include <QtCore/QDir>
diff --git a/src/QProcessInfo.h b/src/QProcessInfo.h
index bee0852..e9b8b54 100644
--- a/src/QProcessInfo.h
+++ b/src/QProcessInfo.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QList>
diff --git a/src/QProcessInfoWidget.cpp b/src/QProcessInfoWidget.cpp
index b04a2e1..84a4193 100644
--- a/src/QProcessInfoWidget.cpp
+++ b/src/QProcessInfoWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QProcessInfoWidget.h"
 #include "QProcessInfo.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/QProcessInfoWidget.h b/src/QProcessInfoWidget.h
index f93edbb..13e4f69 100644
--- a/src/QProcessInfoWidget.h
+++ b/src/QProcessInfoWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/QProgressIndicator.cpp b/src/QProgressIndicator.cpp
index b7b173a..07cd9c9 100644
--- a/src/QProgressIndicator.cpp
+++ b/src/QProgressIndicator.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QProgressIndicator.h"
 
 #include <QDebug>
diff --git a/src/QProgressIndicator.h b/src/QProgressIndicator.h
index 28b3bbf..fbaa405 100644
--- a/src/QProgressIndicator.h
+++ b/src/QProgressIndicator.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QWidget>
diff --git a/src/QStringPair.h b/src/QStringPair.h
index 1717dd4..ab3aa9f 100644
--- a/src/QStringPair.h
+++ b/src/QStringPair.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtCore/QString>
diff --git a/src/QZoomChart.cpp b/src/QZoomChart.cpp
index 136466c..cd3baeb 100644
--- a/src/QZoomChart.cpp
+++ b/src/QZoomChart.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QZoomChart.h"
 #include <QtCharts/QChart>
 #include <QtWidgets/QGesture>
diff --git a/src/QZoomChart.h b/src/QZoomChart.h
index 2bda2dc..c11df00 100644
--- a/src/QZoomChart.h
+++ b/src/QZoomChart.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtCharts/QChart>
diff --git a/src/QZoomChartView.cpp b/src/QZoomChartView.cpp
index 84b1cab..6e229d0 100644
--- a/src/QZoomChartView.cpp
+++ b/src/QZoomChartView.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #include "QZoomChartView.h"
 #include <QtGui/QMouseEvent>
 #include <QtGui/QGuiApplication>
diff --git a/src/QZoomChartView.h b/src/QZoomChartView.h
index ab74312..ff8cf60 100644
--- a/src/QZoomChartView.h
+++ b/src/QZoomChartView.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <QtCharts>
diff --git a/src/SeerAboutDialog.cpp b/src/SeerAboutDialog.cpp
index b927f79..26aa7a0 100644
--- a/src/SeerAboutDialog.cpp
+++ b/src/SeerAboutDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerAboutDialog.h"
 #include "SeerUtl.h"
 #include <QtGui/QColor>
diff --git a/src/SeerAboutDialog.h b/src/SeerAboutDialog.h
index c2178f0..9b76c80 100644
--- a/src/SeerAboutDialog.h
+++ b/src/SeerAboutDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerAdaExceptionsBrowserWidget.cpp b/src/SeerAdaExceptionsBrowserWidget.cpp
index be32aeb..859e3d4 100644
--- a/src/SeerAdaExceptionsBrowserWidget.cpp
+++ b/src/SeerAdaExceptionsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerAdaExceptionsBrowserWidget.h"
 #include "SeerCatchpointCreateDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerAdaExceptionsBrowserWidget.h b/src/SeerAdaExceptionsBrowserWidget.h
index 3dc4872..ceffe39 100644
--- a/src/SeerAdaExceptionsBrowserWidget.h
+++ b/src/SeerAdaExceptionsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerAdaTasksBrowserWidget.cpp b/src/SeerAdaTasksBrowserWidget.cpp
index 07d3a3b..b6405e7 100644
--- a/src/SeerAdaTasksBrowserWidget.cpp
+++ b/src/SeerAdaTasksBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerAdaTasksBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerAdaTasksBrowserWidget.h b/src/SeerAdaTasksBrowserWidget.h
index a414b37..d5ada59 100644
--- a/src/SeerAdaTasksBrowserWidget.h
+++ b/src/SeerAdaTasksBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerArgumentsDialog.cpp b/src/SeerArgumentsDialog.cpp
index f70a1b1..5da9483 100644
--- a/src/SeerArgumentsDialog.cpp
+++ b/src/SeerArgumentsDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerArgumentsDialog.h"
 
 SeerArgumentsDialog::SeerArgumentsDialog (QWidget* parent) : QDialog(parent) {
diff --git a/src/SeerArgumentsDialog.h b/src/SeerArgumentsDialog.h
index 351e3d1..0b886bb 100644
--- a/src/SeerArgumentsDialog.h
+++ b/src/SeerArgumentsDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerArrayVisualizerWidget.cpp b/src/SeerArrayVisualizerWidget.cpp
index f31a6ce..dec0d43 100644
--- a/src/SeerArrayVisualizerWidget.cpp
+++ b/src/SeerArrayVisualizerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerArrayVisualizerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerArrayVisualizerWidget.h b/src/SeerArrayVisualizerWidget.h
index dbbfa2b..34e5b8e 100644
--- a/src/SeerArrayVisualizerWidget.h
+++ b/src/SeerArrayVisualizerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtCharts/QXYSeries>
diff --git a/src/SeerArrayWidget.cpp b/src/SeerArrayWidget.cpp
index 8b7ef6e..f330233 100644
--- a/src/SeerArrayWidget.cpp
+++ b/src/SeerArrayWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerArrayWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QHeaderView>
diff --git a/src/SeerArrayWidget.h b/src/SeerArrayWidget.h
index 1eabc89..b6c5e2f 100644
--- a/src/SeerArrayWidget.h
+++ b/src/SeerArrayWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QTableWidget>
diff --git a/src/SeerAsmWidget.cpp b/src/SeerAsmWidget.cpp
index 61cdbe0..dd4e529 100644
--- a/src/SeerAsmWidget.cpp
+++ b/src/SeerAsmWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerAsmWidget.h"
 #include "SeerUtl.h"
 #include <QtCore/QDebug>
diff --git a/src/SeerAsmWidget.h b/src/SeerAsmWidget.h
index de5a7c3..999b698 100644
--- a/src/SeerAsmWidget.h
+++ b/src/SeerAsmWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "ui_SeerAsmWidget.h"
diff --git a/src/SeerAssemblyConfigPage.cpp b/src/SeerAssemblyConfigPage.cpp
index 2b0f447..0ce3944 100644
--- a/src/SeerAssemblyConfigPage.cpp
+++ b/src/SeerAssemblyConfigPage.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerAssemblyConfigPage.h"
 #include <QtWidgets/QWidget>
 #include <QtGlobal>
diff --git a/src/SeerAssemblyConfigPage.h b/src/SeerAssemblyConfigPage.h
index c4fdcf3..ffc4ed5 100644
--- a/src/SeerAssemblyConfigPage.h
+++ b/src/SeerAssemblyConfigPage.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerAssemblyPreferenceDialog.cpp b/src/SeerAssemblyPreferenceDialog.cpp
index 5b932c3..117f5ed 100644
--- a/src/SeerAssemblyPreferenceDialog.cpp
+++ b/src/SeerAssemblyPreferenceDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerAssemblyPreferenceDialog.h"
 #include <QtCore/QSettings>
 #include <QtCore/QDebug>
diff --git a/src/SeerAssemblyPreferenceDialog.h b/src/SeerAssemblyPreferenceDialog.h
index 1f779ac..abf0305 100644
--- a/src/SeerAssemblyPreferenceDialog.h
+++ b/src/SeerAssemblyPreferenceDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerBreakpointCreateDialog.cpp b/src/SeerBreakpointCreateDialog.cpp
index f566cb4..29048b2 100644
--- a/src/SeerBreakpointCreateDialog.cpp
+++ b/src/SeerBreakpointCreateDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerBreakpointCreateDialog.h"
 #include <QtCore/QDebug>
 
diff --git a/src/SeerBreakpointCreateDialog.h b/src/SeerBreakpointCreateDialog.h
index 81d9b2d..1ad30a4 100644
--- a/src/SeerBreakpointCreateDialog.h
+++ b/src/SeerBreakpointCreateDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerBreakpointsBrowserWidget.cpp b/src/SeerBreakpointsBrowserWidget.cpp
index 01879ed..403548e 100644
--- a/src/SeerBreakpointsBrowserWidget.cpp
+++ b/src/SeerBreakpointsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerBreakpointsBrowserWidget.h"
 #include "SeerBreakpointCreateDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerBreakpointsBrowserWidget.h b/src/SeerBreakpointsBrowserWidget.h
index 81e4600..1cb940f 100644
--- a/src/SeerBreakpointsBrowserWidget.h
+++ b/src/SeerBreakpointsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerCatchpointCreateDialog.cpp b/src/SeerCatchpointCreateDialog.cpp
index d86907d..7055e6f 100644
--- a/src/SeerCatchpointCreateDialog.cpp
+++ b/src/SeerCatchpointCreateDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerCatchpointCreateDialog.h"
 #include <QtCore/QDebug>
 
diff --git a/src/SeerCatchpointCreateDialog.h b/src/SeerCatchpointCreateDialog.h
index c9058bf..6c737ab 100644
--- a/src/SeerCatchpointCreateDialog.h
+++ b/src/SeerCatchpointCreateDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerCatchpointsBrowserWidget.cpp b/src/SeerCatchpointsBrowserWidget.cpp
index f057352..411f6fe 100644
--- a/src/SeerCatchpointsBrowserWidget.cpp
+++ b/src/SeerCatchpointsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerCatchpointsBrowserWidget.h"
 #include "SeerCatchpointCreateDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerCatchpointsBrowserWidget.h b/src/SeerCatchpointsBrowserWidget.h
index 62a6798..1cee38c 100644
--- a/src/SeerCatchpointsBrowserWidget.h
+++ b/src/SeerCatchpointsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerCheckpointsBrowserWidget.cpp b/src/SeerCheckpointsBrowserWidget.cpp
index 72ff6fe..9b11103 100644
--- a/src/SeerCheckpointsBrowserWidget.cpp
+++ b/src/SeerCheckpointsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerCheckpointsBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerCheckpointsBrowserWidget.h b/src/SeerCheckpointsBrowserWidget.h
index 719fe56..b619b70 100644
--- a/src/SeerCheckpointsBrowserWidget.h
+++ b/src/SeerCheckpointsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerCloseSourceDialog.cpp b/src/SeerCloseSourceDialog.cpp
index b954961..be78ef2 100644
--- a/src/SeerCloseSourceDialog.cpp
+++ b/src/SeerCloseSourceDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerCloseSourceDialog.h"
 #include <QtWidgets/QDialog>
 #include <QtWidgets/QWidget>
diff --git a/src/SeerCloseSourceDialog.h b/src/SeerCloseSourceDialog.h
index d0e8646..aeff1c3 100644
--- a/src/SeerCloseSourceDialog.h
+++ b/src/SeerCloseSourceDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerEditorManagerEntry.h"
diff --git a/src/SeerConfigDialog.cpp b/src/SeerConfigDialog.cpp
index 8850b83..2a77f82 100644
--- a/src/SeerConfigDialog.cpp
+++ b/src/SeerConfigDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerConfigDialog.h"
 #include <QtWidgets/QListWidget>
 #include <QtWidgets/QListWidgetItem>
diff --git a/src/SeerConfigDialog.h b/src/SeerConfigDialog.h
index 46000e8..ccf77a5 100644
--- a/src/SeerConfigDialog.h
+++ b/src/SeerConfigDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerGdbConfigPage.h"
diff --git a/src/SeerConsoleWidget.cpp b/src/SeerConsoleWidget.cpp
index 9209b09..08d1c8f 100644
--- a/src/SeerConsoleWidget.cpp
+++ b/src/SeerConsoleWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerConsoleWidget.h"
 #include <QtWidgets/QPlainTextEdit>
 #include <QtWidgets/QCheckBox>
diff --git a/src/SeerConsoleWidget.h b/src/SeerConsoleWidget.h
index 839ba2d..8329611 100644
--- a/src/SeerConsoleWidget.h
+++ b/src/SeerConsoleWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerCppSourceHighlighter.cpp b/src/SeerCppSourceHighlighter.cpp
index 7fe921b..c6fc4c6 100644
--- a/src/SeerCppSourceHighlighter.cpp
+++ b/src/SeerCppSourceHighlighter.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerCppSourceHighlighter.h"
 
 SeerCppSourceHighlighter::SeerCppSourceHighlighter (QTextDocument* parent) : QSyntaxHighlighter(parent) {
diff --git a/src/SeerCppSourceHighlighter.h b/src/SeerCppSourceHighlighter.h
index 9266986..63c1c35 100644
--- a/src/SeerCppSourceHighlighter.h
+++ b/src/SeerCppSourceHighlighter.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerHighlighterSettings.h"
diff --git a/src/SeerCxxSourceHighlighter.cpp b/src/SeerCxxSourceHighlighter.cpp
index de8a29a..477a59c 100644
--- a/src/SeerCxxSourceHighlighter.cpp
+++ b/src/SeerCxxSourceHighlighter.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerCxxSourceHighlighter.h"
 #include <algorithm>
 
diff --git a/src/SeerCxxSourceHighlighter.h b/src/SeerCxxSourceHighlighter.h
index 9d135a4..c22eda8 100644
--- a/src/SeerCxxSourceHighlighter.h
+++ b/src/SeerCxxSourceHighlighter.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtGui/QSyntaxHighlighter>
diff --git a/src/SeerDebugDialog.cpp b/src/SeerDebugDialog.cpp
index 396905e..5585c67 100644
--- a/src/SeerDebugDialog.cpp
+++ b/src/SeerDebugDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerDebugDialog.h"
 #include "SeerExecutableFilterProxyModel.h"
 #include "SeerDirectoryFilterProxyModel.h"
diff --git a/src/SeerDebugDialog.h b/src/SeerDebugDialog.h
index 131d477..7b25011 100644
--- a/src/SeerDebugDialog.h
+++ b/src/SeerDebugDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerDirectoryFilterProxyModel.h b/src/SeerDirectoryFilterProxyModel.h
index be91036..863106c 100644
--- a/src/SeerDirectoryFilterProxyModel.h
+++ b/src/SeerDirectoryFilterProxyModel.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QFileSystemModel>
diff --git a/src/SeerEditorConfigPage.cpp b/src/SeerEditorConfigPage.cpp
index 31e9141..c5cf2ee 100644
--- a/src/SeerEditorConfigPage.cpp
+++ b/src/SeerEditorConfigPage.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerEditorConfigPage.h"
 #include "QColorButton.h"
 #include <QtGui/QFontDatabase>
diff --git a/src/SeerEditorConfigPage.h b/src/SeerEditorConfigPage.h
index 3c1bd1a..0e87a3a 100644
--- a/src/SeerEditorConfigPage.h
+++ b/src/SeerEditorConfigPage.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerHighlighterSettings.h"
diff --git a/src/SeerEditorManagerEntry.h b/src/SeerEditorManagerEntry.h
index 70accaf..eda2df1 100644
--- a/src/SeerEditorManagerEntry.h
+++ b/src/SeerEditorManagerEntry.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerEditorWidgetSource.h"
diff --git a/src/SeerEditorManagerWidget.cpp b/src/SeerEditorManagerWidget.cpp
index 5a2f875..819aa11 100644
--- a/src/SeerEditorManagerWidget.cpp
+++ b/src/SeerEditorManagerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerEditorManagerWidget.h"
 #include "SeerEditorWidgetSource.h"
 #include "SeerEditorWidgetAssembly.h"
diff --git a/src/SeerEditorManagerWidget.h b/src/SeerEditorManagerWidget.h
index 9573182..32bc06a 100644
--- a/src/SeerEditorManagerWidget.h
+++ b/src/SeerEditorManagerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerEditorWidgetAssembly.h"
diff --git a/src/SeerEditorWidgetAssembly.cpp b/src/SeerEditorWidgetAssembly.cpp
index b244e58..638997d 100644
--- a/src/SeerEditorWidgetAssembly.cpp
+++ b/src/SeerEditorWidgetAssembly.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerEditorWidgetAssembly.h"
 #include "SeerAssemblyPreferenceDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerEditorWidgetAssembly.h b/src/SeerEditorWidgetAssembly.h
index cccd8d6..9478111 100644
--- a/src/SeerEditorWidgetAssembly.h
+++ b/src/SeerEditorWidgetAssembly.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerCppSourceHighlighter.h"
diff --git a/src/SeerEditorWidgetAssemblyAreas.cpp b/src/SeerEditorWidgetAssemblyAreas.cpp
index 535b2e1..7cfa327 100644
--- a/src/SeerEditorWidgetAssemblyAreas.cpp
+++ b/src/SeerEditorWidgetAssemblyAreas.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerEditorWidgetAssembly.h"
 #include "SeerPlainTextEdit.h"
 #include "SeerBreakpointCreateDialog.h"
diff --git a/src/SeerEditorWidgetSource.cpp b/src/SeerEditorWidgetSource.cpp
index 7280d67..2f071ed 100644
--- a/src/SeerEditorWidgetSource.cpp
+++ b/src/SeerEditorWidgetSource.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerEditorWidgetSource.h"
 #include <QtGui/QColor>
 #include <QtGui/QPainter>
diff --git a/src/SeerEditorWidgetSource.h b/src/SeerEditorWidgetSource.h
index 1fe4561..544148f 100644
--- a/src/SeerEditorWidgetSource.h
+++ b/src/SeerEditorWidgetSource.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerCppSourceHighlighter.h"
diff --git a/src/SeerEditorWidgetSourceAreas.cpp b/src/SeerEditorWidgetSourceAreas.cpp
index 22bbb94..29d1fe0 100644
--- a/src/SeerEditorWidgetSourceAreas.cpp
+++ b/src/SeerEditorWidgetSourceAreas.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerEditorWidgetSource.h"
 #include "SeerPlainTextEdit.h"
 #include "SeerBreakpointCreateDialog.h"
diff --git a/src/SeerExecutableFilterProxyModel.h b/src/SeerExecutableFilterProxyModel.h
index 6b3b30e..2264745 100644
--- a/src/SeerExecutableFilterProxyModel.h
+++ b/src/SeerExecutableFilterProxyModel.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QFileSystemModel>
diff --git a/src/SeerFunctionBrowserWidget.cpp b/src/SeerFunctionBrowserWidget.cpp
index 0bf9ef7..948b325 100644
--- a/src/SeerFunctionBrowserWidget.cpp
+++ b/src/SeerFunctionBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerFunctionBrowserWidget.h"
 #include "SeerBreakpointCreateDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerFunctionBrowserWidget.h b/src/SeerFunctionBrowserWidget.h
index 2ef92a3..f294f95 100644
--- a/src/SeerFunctionBrowserWidget.h
+++ b/src/SeerFunctionBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerGdbConfigPage.cpp b/src/SeerGdbConfigPage.cpp
index 6800b47..77b7d4c 100644
--- a/src/SeerGdbConfigPage.cpp
+++ b/src/SeerGdbConfigPage.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerGdbConfigPage.h"
 #include <QtWidgets/QWidget>
 #include <QtWidgets/QFileDialog>
diff --git a/src/SeerGdbConfigPage.h b/src/SeerGdbConfigPage.h
index e187089..55e55c3 100644
--- a/src/SeerGdbConfigPage.h
+++ b/src/SeerGdbConfigPage.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerGdbLogWidget.cpp b/src/SeerGdbLogWidget.cpp
index 78e25cb..535405a 100644
--- a/src/SeerGdbLogWidget.cpp
+++ b/src/SeerGdbLogWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerGdbLogWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QScrollBar>
diff --git a/src/SeerGdbLogWidget.h b/src/SeerGdbLogWidget.h
index 02528ac..b8fcf37 100644
--- a/src/SeerGdbLogWidget.h
+++ b/src/SeerGdbLogWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerLogWidget.h"
diff --git a/src/SeerGdbWidget.cpp b/src/SeerGdbWidget.cpp
index 2e0ad29..bb49456 100644
--- a/src/SeerGdbWidget.cpp
+++ b/src/SeerGdbWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerGdbWidget.h"
 #include "SeerLogWidget.h"
 #include "SeerMemoryVisualizerWidget.h"
diff --git a/src/SeerGdbWidget.h b/src/SeerGdbWidget.h
index 0b09e83..9dc2c4d 100644
--- a/src/SeerGdbWidget.h
+++ b/src/SeerGdbWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerConsoleWidget.h"
diff --git a/src/SeerHelpPageDialog.cpp b/src/SeerHelpPageDialog.cpp
index 3377432..e1717f8 100644
--- a/src/SeerHelpPageDialog.cpp
+++ b/src/SeerHelpPageDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerHelpPageDialog.h"
 #include <QtPrintSupport/QPrinter>
 #include <QtPrintSupport/QPrintDialog>
diff --git a/src/SeerHelpPageDialog.h b/src/SeerHelpPageDialog.h
index 80c3b40..54bdb5a 100644
--- a/src/SeerHelpPageDialog.h
+++ b/src/SeerHelpPageDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "ui_SeerHelpPageDialog.h"
diff --git a/src/SeerHexWidget.cpp b/src/SeerHexWidget.cpp
index 4d0b3ed..7f0d311 100644
--- a/src/SeerHexWidget.cpp
+++ b/src/SeerHexWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerHexWidget.h"
 #include "SeerUtl.h"
 #include <QtGui/QPainter>
diff --git a/src/SeerHexWidget.h b/src/SeerHexWidget.h
index 382a40b..2a8a13b 100644
--- a/src/SeerHexWidget.h
+++ b/src/SeerHexWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QPlainTextEdit>
diff --git a/src/SeerHighlighterSettings.cpp b/src/SeerHighlighterSettings.cpp
index be1c0f8..4559df8 100644
--- a/src/SeerHighlighterSettings.cpp
+++ b/src/SeerHighlighterSettings.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerHighlighterSettings.h"
 
 SeerHighlighterSettings::SeerHighlighterSettings () {
diff --git a/src/SeerHighlighterSettings.h b/src/SeerHighlighterSettings.h
index 08ccc29..8c53c85 100644
--- a/src/SeerHighlighterSettings.h
+++ b/src/SeerHighlighterSettings.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtGui/QTextCharFormat>
diff --git a/src/SeerHistoryLineEdit.cpp b/src/SeerHistoryLineEdit.cpp
index 0c0b05d..eb602a9 100644
--- a/src/SeerHistoryLineEdit.cpp
+++ b/src/SeerHistoryLineEdit.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerHistoryLineEdit.h"
 
 SeerHistoryLineEdit::SeerHistoryLineEdit (const QString& contents, QWidget* parent) : QHistoryLineEdit(contents, parent) {
diff --git a/src/SeerHistoryLineEdit.h b/src/SeerHistoryLineEdit.h
index b4f268b..de5b414 100644
--- a/src/SeerHistoryLineEdit.h
+++ b/src/SeerHistoryLineEdit.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "QHistoryLineEdit.h"
diff --git a/src/SeerImageVisualizerWidget.cpp b/src/SeerImageVisualizerWidget.cpp
index 2365ec5..b9db49b 100644
--- a/src/SeerImageVisualizerWidget.cpp
+++ b/src/SeerImageVisualizerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerImageVisualizerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerImageVisualizerWidget.h b/src/SeerImageVisualizerWidget.h
index 9ff031d..376cb86 100644
--- a/src/SeerImageVisualizerWidget.h
+++ b/src/SeerImageVisualizerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerKeySettings.cpp b/src/SeerKeySettings.cpp
index c30c0ec..d0c8d07 100644
--- a/src/SeerKeySettings.cpp
+++ b/src/SeerKeySettings.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerKeySettings.h"
 #include <QtCore/QList>
 
diff --git a/src/SeerKeySettings.h b/src/SeerKeySettings.h
index 286939e..8822ea0 100644
--- a/src/SeerKeySettings.h
+++ b/src/SeerKeySettings.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtGui/QKeySequence>
diff --git a/src/SeerKeysConfigPage.cpp b/src/SeerKeysConfigPage.cpp
index bc0177c..a3012e0 100644
--- a/src/SeerKeysConfigPage.cpp
+++ b/src/SeerKeysConfigPage.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerKeysConfigPage.h"
 #include <QtWidgets/QKeySequenceEdit>
 #include <QtWidgets/QLabel>
diff --git a/src/SeerKeysConfigPage.h b/src/SeerKeysConfigPage.h
index 58fae9e..a8e9321 100644
--- a/src/SeerKeysConfigPage.h
+++ b/src/SeerKeysConfigPage.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerKeySettings.h"
diff --git a/src/SeerLibraryBrowserWidget.cpp b/src/SeerLibraryBrowserWidget.cpp
index a13b744..9f0ea09 100644
--- a/src/SeerLibraryBrowserWidget.cpp
+++ b/src/SeerLibraryBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerLibraryBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerLibraryBrowserWidget.h b/src/SeerLibraryBrowserWidget.h
index 5a9f692..81cd4da 100644
--- a/src/SeerLibraryBrowserWidget.h
+++ b/src/SeerLibraryBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerLogWidget.cpp b/src/SeerLogWidget.cpp
index 7891bc9..f836e97 100644
--- a/src/SeerLogWidget.cpp
+++ b/src/SeerLogWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerLogWidget.h"
 #include <QtWidgets/QTextEdit>
 #include <QtWidgets/QCheckBox>
diff --git a/src/SeerLogWidget.h b/src/SeerLogWidget.h
index b3bab14..20778d4 100644
--- a/src/SeerLogWidget.h
+++ b/src/SeerLogWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerMainWindow.cpp b/src/SeerMainWindow.cpp
index dc92335..e6e3f57 100644
--- a/src/SeerMainWindow.cpp
+++ b/src/SeerMainWindow.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerMainWindow.h"
 #include "SeerDebugDialog.h"
 #include "SeerConfigDialog.h"
diff --git a/src/SeerMainWindow.h b/src/SeerMainWindow.h
index f0ceb59..f3f6621 100644
--- a/src/SeerMainWindow.h
+++ b/src/SeerMainWindow.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "ui_SeerMainWindow.h"
diff --git a/src/SeerMatrixVisualizerWidget.cpp b/src/SeerMatrixVisualizerWidget.cpp
index d4d5b67..1c3cee3 100644
--- a/src/SeerMatrixVisualizerWidget.cpp
+++ b/src/SeerMatrixVisualizerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerMatrixVisualizerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerMatrixVisualizerWidget.h b/src/SeerMatrixVisualizerWidget.h
index 14d52e0..e7c25b2 100644
--- a/src/SeerMatrixVisualizerWidget.h
+++ b/src/SeerMatrixVisualizerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtCharts/QXYSeries>
diff --git a/src/SeerMatrixWidget.cpp b/src/SeerMatrixWidget.cpp
index 1a07a3f..6270f4e 100644
--- a/src/SeerMatrixWidget.cpp
+++ b/src/SeerMatrixWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerMatrixWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QHeaderView>
diff --git a/src/SeerMatrixWidget.h b/src/SeerMatrixWidget.h
index 9ba5c97..d83ed2e 100644
--- a/src/SeerMatrixWidget.h
+++ b/src/SeerMatrixWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QTableWidget>
diff --git a/src/SeerMemoryVisualizerWidget.cpp b/src/SeerMemoryVisualizerWidget.cpp
index 77df84c..c772b08 100644
--- a/src/SeerMemoryVisualizerWidget.cpp
+++ b/src/SeerMemoryVisualizerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerMemoryVisualizerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerMemoryVisualizerWidget.h b/src/SeerMemoryVisualizerWidget.h
index 27d9c5f..6187652 100644
--- a/src/SeerMemoryVisualizerWidget.h
+++ b/src/SeerMemoryVisualizerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerMessagesBrowserWidget.cpp b/src/SeerMessagesBrowserWidget.cpp
index 90669d1..fbafd09 100644
--- a/src/SeerMessagesBrowserWidget.cpp
+++ b/src/SeerMessagesBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerMessagesBrowserWidget.h"
 #include <QtWidgets/QTreeWidget>
 #include <QtWidgets/QTreeWidgetItemIterator>
diff --git a/src/SeerMessagesBrowserWidget.h b/src/SeerMessagesBrowserWidget.h
index bea3d3e..176d862 100644
--- a/src/SeerMessagesBrowserWidget.h
+++ b/src/SeerMessagesBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QMessageBox>
diff --git a/src/SeerMessagesDialog.cpp b/src/SeerMessagesDialog.cpp
index a33a008..5dc58df 100644
--- a/src/SeerMessagesDialog.cpp
+++ b/src/SeerMessagesDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerMessagesDialog.h"
 #include <QtWidgets/QTreeWidget>
 #include <QtWidgets/QTreeWidgetItem>
diff --git a/src/SeerMessagesDialog.h b/src/SeerMessagesDialog.h
index b93d646..a2eb474 100644
--- a/src/SeerMessagesDialog.h
+++ b/src/SeerMessagesDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QMessageBox>
diff --git a/src/SeerPlainTextEdit.cpp b/src/SeerPlainTextEdit.cpp
index f5a3170..6af3d4f 100644
--- a/src/SeerPlainTextEdit.cpp
+++ b/src/SeerPlainTextEdit.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerPlainTextEdit.h"
 
 SeerPlainTextEdit::SeerPlainTextEdit(const QString& text, QWidget* parent) : QPlainTextEdit(text, parent) {
diff --git a/src/SeerPlainTextEdit.h b/src/SeerPlainTextEdit.h
index f8a32ce..45a3dd9 100644
--- a/src/SeerPlainTextEdit.h
+++ b/src/SeerPlainTextEdit.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QPlainTextEdit>
diff --git a/src/SeerPrintpointCreateDialog.cpp b/src/SeerPrintpointCreateDialog.cpp
index 656f7ef..3d75b07 100644
--- a/src/SeerPrintpointCreateDialog.cpp
+++ b/src/SeerPrintpointCreateDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerPrintpointCreateDialog.h"
 #include "SeerHelpPageDialog.h"
 #include <QtCore/QDebug>
diff --git a/src/SeerPrintpointCreateDialog.h b/src/SeerPrintpointCreateDialog.h
index f5f5cc4..5fa3ae6 100644
--- a/src/SeerPrintpointCreateDialog.h
+++ b/src/SeerPrintpointCreateDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerPrintpointsBrowserWidget.cpp b/src/SeerPrintpointsBrowserWidget.cpp
index 764b482..52b2327 100644
--- a/src/SeerPrintpointsBrowserWidget.cpp
+++ b/src/SeerPrintpointsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerPrintpointsBrowserWidget.h"
 #include "SeerPrintpointCreateDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerPrintpointsBrowserWidget.h b/src/SeerPrintpointsBrowserWidget.h
index a02b58a..e71ab9d 100644
--- a/src/SeerPrintpointsBrowserWidget.h
+++ b/src/SeerPrintpointsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerProgressIndicator.cpp b/src/SeerProgressIndicator.cpp
index e857da1..23ce43c 100644
--- a/src/SeerProgressIndicator.cpp
+++ b/src/SeerProgressIndicator.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerProgressIndicator.h"
 #include <QtWidgets/QMenu>
 #include <QAction>
diff --git a/src/SeerProgressIndicator.h b/src/SeerProgressIndicator.h
index 46cd6e9..72e3be6 100644
--- a/src/SeerProgressIndicator.h
+++ b/src/SeerProgressIndicator.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 #include "QProgressIndicator.h"
 
diff --git a/src/SeerRRConfigPage.cpp b/src/SeerRRConfigPage.cpp
index a904a8f..f720f03 100644
--- a/src/SeerRRConfigPage.cpp
+++ b/src/SeerRRConfigPage.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerRRConfigPage.h"
 #include <QtWidgets/QWidget>
 #include <QtWidgets/QFileDialog>
diff --git a/src/SeerRRConfigPage.h b/src/SeerRRConfigPage.h
index 5ae869e..e0322a8 100644
--- a/src/SeerRRConfigPage.h
+++ b/src/SeerRRConfigPage.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerRegisterEditValueDialog.cpp b/src/SeerRegisterEditValueDialog.cpp
index 62c1492..7b1a4c9 100644
--- a/src/SeerRegisterEditValueDialog.cpp
+++ b/src/SeerRegisterEditValueDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerRegisterEditValueDialog.h"
 #include <QtCore/QDebug>
 
diff --git a/src/SeerRegisterEditValueDialog.h b/src/SeerRegisterEditValueDialog.h
index c8c77dd..1fc7682 100644
--- a/src/SeerRegisterEditValueDialog.h
+++ b/src/SeerRegisterEditValueDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerRegisterProfileDialog.cpp b/src/SeerRegisterProfileDialog.cpp
index d7c27a7..cf14fb5 100644
--- a/src/SeerRegisterProfileDialog.cpp
+++ b/src/SeerRegisterProfileDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerRegisterProfileDialog.h"
 #include "SeerRegisterTreeWidgetItem.h"
 #include <QtWidgets/QMessageBox>
diff --git a/src/SeerRegisterProfileDialog.h b/src/SeerRegisterProfileDialog.h
index 82b6efc..0627a00 100644
--- a/src/SeerRegisterProfileDialog.h
+++ b/src/SeerRegisterProfileDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerRegisterTreeWidgetItem.cpp b/src/SeerRegisterTreeWidgetItem.cpp
index 0939826..c1373cc 100644
--- a/src/SeerRegisterTreeWidgetItem.cpp
+++ b/src/SeerRegisterTreeWidgetItem.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerRegisterTreeWidgetItem.h"
 #include <QtWidgets/QTreeWidget>
 #include <QtWidgets/QTreeWidgetItem>
diff --git a/src/SeerRegisterTreeWidgetItem.h b/src/SeerRegisterTreeWidgetItem.h
index 0e35757..ca30982 100644
--- a/src/SeerRegisterTreeWidgetItem.h
+++ b/src/SeerRegisterTreeWidgetItem.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerRegisterValuesBrowserWidget.cpp b/src/SeerRegisterValuesBrowserWidget.cpp
index cb2b991..f74e6df 100644
--- a/src/SeerRegisterValuesBrowserWidget.cpp
+++ b/src/SeerRegisterValuesBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerRegisterValuesBrowserWidget.h"
 #include "SeerRegisterEditValueDialog.h"
 #include "SeerRegisterProfileDialog.h"
diff --git a/src/SeerRegisterValuesBrowserWidget.h b/src/SeerRegisterValuesBrowserWidget.h
index 73ee8da..900638e 100644
--- a/src/SeerRegisterValuesBrowserWidget.h
+++ b/src/SeerRegisterValuesBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "ui_SeerRegisterValuesBrowserWidget.h"
diff --git a/src/SeerRunStatusIndicator.cpp b/src/SeerRunStatusIndicator.cpp
index 9b1c908..ee9dc3a 100644
--- a/src/SeerRunStatusIndicator.cpp
+++ b/src/SeerRunStatusIndicator.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerRunStatusIndicator.h"
 #include <QtWidgets/QApplication>
 #include <QtCore/QDebug>
diff --git a/src/SeerRunStatusIndicator.h b/src/SeerRunStatusIndicator.h
index 05e1587..5309b70 100644
--- a/src/SeerRunStatusIndicator.h
+++ b/src/SeerRunStatusIndicator.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QLabel>
diff --git a/src/SeerSeerConfigPage.cpp b/src/SeerSeerConfigPage.cpp
index 756e034..125496c 100644
--- a/src/SeerSeerConfigPage.cpp
+++ b/src/SeerSeerConfigPage.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSeerConfigPage.h"
 #include <QtWidgets/QWidget>
 
diff --git a/src/SeerSeerConfigPage.h b/src/SeerSeerConfigPage.h
index c4ddc96..b2b8105 100644
--- a/src/SeerSeerConfigPage.h
+++ b/src/SeerSeerConfigPage.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerSeerLogWidget.cpp b/src/SeerSeerLogWidget.cpp
index 4326572..8511344 100644
--- a/src/SeerSeerLogWidget.cpp
+++ b/src/SeerSeerLogWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSeerLogWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QScrollBar>
diff --git a/src/SeerSeerLogWidget.h b/src/SeerSeerLogWidget.h
index dbb3d41..8b54147 100644
--- a/src/SeerSeerLogWidget.h
+++ b/src/SeerSeerLogWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerLogWidget.h"
diff --git a/src/SeerSkipBrowserWidget.cpp b/src/SeerSkipBrowserWidget.cpp
index 2bb59fe..8700414 100644
--- a/src/SeerSkipBrowserWidget.cpp
+++ b/src/SeerSkipBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSkipBrowserWidget.h"
 #include "SeerSkipCreateDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerSkipBrowserWidget.h b/src/SeerSkipBrowserWidget.h
index dbbd9a4..91adeca 100644
--- a/src/SeerSkipBrowserWidget.h
+++ b/src/SeerSkipBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerSkipCreateDialog.cpp b/src/SeerSkipCreateDialog.cpp
index 914ceda..eaad8e1 100644
--- a/src/SeerSkipCreateDialog.cpp
+++ b/src/SeerSkipCreateDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSkipCreateDialog.h"
 #include "SeerHelpPageDialog.h"
 #include <QtCore/QDebug>
diff --git a/src/SeerSkipCreateDialog.h b/src/SeerSkipCreateDialog.h
index f0ae194..49415f2 100644
--- a/src/SeerSkipCreateDialog.h
+++ b/src/SeerSkipCreateDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerSlashProcDialog.cpp b/src/SeerSlashProcDialog.cpp
index 1110736..2df416f 100644
--- a/src/SeerSlashProcDialog.cpp
+++ b/src/SeerSlashProcDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSlashProcDialog.h"
 
 SeerSlashProcDialog::SeerSlashProcDialog (QWidget* parent) : QDialog(parent) {
diff --git a/src/SeerSlashProcDialog.h b/src/SeerSlashProcDialog.h
index 79aec9d..af45f90 100644
--- a/src/SeerSlashProcDialog.h
+++ b/src/SeerSlashProcDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerSourceBrowserWidget.cpp b/src/SeerSourceBrowserWidget.cpp
index 6548093..8f9dd37 100644
--- a/src/SeerSourceBrowserWidget.cpp
+++ b/src/SeerSourceBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSourceBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerSourceBrowserWidget.h b/src/SeerSourceBrowserWidget.h
index 505ae4e..a529c9d 100644
--- a/src/SeerSourceBrowserWidget.h
+++ b/src/SeerSourceBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerSourceConfigPage.cpp b/src/SeerSourceConfigPage.cpp
index 2688dbb..557dd49 100644
--- a/src/SeerSourceConfigPage.cpp
+++ b/src/SeerSourceConfigPage.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSourceConfigPage.h"
 #include <QtWidgets/QInputDialog>
 #include <QtWidgets/QFileDialog>
diff --git a/src/SeerSourceConfigPage.h b/src/SeerSourceConfigPage.h
index ca35dfa..0d99c66 100644
--- a/src/SeerSourceConfigPage.h
+++ b/src/SeerSourceConfigPage.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerSourceSymbolLibraryManagerWidget.cpp b/src/SeerSourceSymbolLibraryManagerWidget.cpp
index bb110b5..9a92cd3 100644
--- a/src/SeerSourceSymbolLibraryManagerWidget.cpp
+++ b/src/SeerSourceSymbolLibraryManagerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerSourceSymbolLibraryManagerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "QHContainerWidget.h"
diff --git a/src/SeerSourceSymbolLibraryManagerWidget.h b/src/SeerSourceSymbolLibraryManagerWidget.h
index 89020d6..0e420e1 100644
--- a/src/SeerSourceSymbolLibraryManagerWidget.h
+++ b/src/SeerSourceSymbolLibraryManagerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerSourceBrowserWidget.h"
diff --git a/src/SeerStackArgumentsBrowserWidget.cpp b/src/SeerStackArgumentsBrowserWidget.cpp
index 518d5c1..7666d66 100644
--- a/src/SeerStackArgumentsBrowserWidget.cpp
+++ b/src/SeerStackArgumentsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStackArgumentsBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerStackArgumentsBrowserWidget.h b/src/SeerStackArgumentsBrowserWidget.h
index d090364..ac7b515 100644
--- a/src/SeerStackArgumentsBrowserWidget.h
+++ b/src/SeerStackArgumentsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerStackDumpBrowserWidget.cpp b/src/SeerStackDumpBrowserWidget.cpp
index da5bf00..0561ced 100644
--- a/src/SeerStackDumpBrowserWidget.cpp
+++ b/src/SeerStackDumpBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStackDumpBrowserWidget.h"
 #include "SeerStackDumpSettingsDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerStackDumpBrowserWidget.h b/src/SeerStackDumpBrowserWidget.h
index 77d762f..7f7bfb7 100644
--- a/src/SeerStackDumpBrowserWidget.h
+++ b/src/SeerStackDumpBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerStackDumpSettingsDialog.cpp b/src/SeerStackDumpSettingsDialog.cpp
index d7e4f70..c04631e 100644
--- a/src/SeerStackDumpSettingsDialog.cpp
+++ b/src/SeerStackDumpSettingsDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStackDumpSettingsDialog.h"
 #include "SeerRegisterTreeWidgetItem.h"
 #include <QtWidgets/QMessageBox>
diff --git a/src/SeerStackDumpSettingsDialog.h b/src/SeerStackDumpSettingsDialog.h
index 3100901..b237b38 100644
--- a/src/SeerStackDumpSettingsDialog.h
+++ b/src/SeerStackDumpSettingsDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerStackFramesBrowserWidget.cpp b/src/SeerStackFramesBrowserWidget.cpp
index ff04223..1852a12 100644
--- a/src/SeerStackFramesBrowserWidget.cpp
+++ b/src/SeerStackFramesBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStackFramesBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerStackFramesBrowserWidget.h b/src/SeerStackFramesBrowserWidget.h
index bbceaf3..e75aefa 100644
--- a/src/SeerStackFramesBrowserWidget.h
+++ b/src/SeerStackFramesBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerStackLocalsBrowserWidget.cpp b/src/SeerStackLocalsBrowserWidget.cpp
index 39563ef..c4afb63 100644
--- a/src/SeerStackLocalsBrowserWidget.cpp
+++ b/src/SeerStackLocalsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStackLocalsBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerStackLocalsBrowserWidget.h b/src/SeerStackLocalsBrowserWidget.h
index 8305d7d..7820355 100644
--- a/src/SeerStackLocalsBrowserWidget.h
+++ b/src/SeerStackLocalsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerStackManagerWidget.cpp b/src/SeerStackManagerWidget.cpp
index 35747ec..0a4c8d9 100644
--- a/src/SeerStackManagerWidget.cpp
+++ b/src/SeerStackManagerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStackManagerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerStackManagerWidget.h b/src/SeerStackManagerWidget.h
index 7c39495..1291ad0 100644
--- a/src/SeerStackManagerWidget.h
+++ b/src/SeerStackManagerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerStackFramesBrowserWidget.h"
diff --git a/src/SeerStaticBrowserWidget.cpp b/src/SeerStaticBrowserWidget.cpp
index ee9ee9e..b294252 100644
--- a/src/SeerStaticBrowserWidget.cpp
+++ b/src/SeerStaticBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStaticBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerStaticBrowserWidget.h b/src/SeerStaticBrowserWidget.h
index 111801f..ea702aa 100644
--- a/src/SeerStaticBrowserWidget.h
+++ b/src/SeerStaticBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerStructVisualizerWidget.cpp b/src/SeerStructVisualizerWidget.cpp
index 8fbc910..9f61a24 100644
--- a/src/SeerStructVisualizerWidget.cpp
+++ b/src/SeerStructVisualizerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerStructVisualizerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerStructVisualizerWidget.h b/src/SeerStructVisualizerWidget.h
index f601993..f0b1d06 100644
--- a/src/SeerStructVisualizerWidget.h
+++ b/src/SeerStructVisualizerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerThreadFramesBrowserWidget.cpp b/src/SeerThreadFramesBrowserWidget.cpp
index 9aab2e9..3a4df93 100644
--- a/src/SeerThreadFramesBrowserWidget.cpp
+++ b/src/SeerThreadFramesBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerThreadFramesBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerThreadFramesBrowserWidget.h b/src/SeerThreadFramesBrowserWidget.h
index e900595..5d82cac 100644
--- a/src/SeerThreadFramesBrowserWidget.h
+++ b/src/SeerThreadFramesBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerThreadGroupsBrowserWidget.cpp b/src/SeerThreadGroupsBrowserWidget.cpp
index 9acd3fa..755d599 100644
--- a/src/SeerThreadGroupsBrowserWidget.cpp
+++ b/src/SeerThreadGroupsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerThreadGroupsBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerThreadGroupsBrowserWidget.h b/src/SeerThreadGroupsBrowserWidget.h
index 70d4b0f..7f19180 100644
--- a/src/SeerThreadGroupsBrowserWidget.h
+++ b/src/SeerThreadGroupsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerThreadIdsBrowserWidget.cpp b/src/SeerThreadIdsBrowserWidget.cpp
index 70b3cf9..00f3136 100644
--- a/src/SeerThreadIdsBrowserWidget.cpp
+++ b/src/SeerThreadIdsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerThreadIdsBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerThreadIdsBrowserWidget.h b/src/SeerThreadIdsBrowserWidget.h
index 930aeb4..d3fc853 100644
--- a/src/SeerThreadIdsBrowserWidget.h
+++ b/src/SeerThreadIdsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerThreadManagerWidget.cpp b/src/SeerThreadManagerWidget.cpp
index 7e9a993..90cde7d 100644
--- a/src/SeerThreadManagerWidget.cpp
+++ b/src/SeerThreadManagerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerThreadManagerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "QHContainerWidget.h"
diff --git a/src/SeerThreadManagerWidget.h b/src/SeerThreadManagerWidget.h
index 1ab451f..53c82d7 100644
--- a/src/SeerThreadManagerWidget.h
+++ b/src/SeerThreadManagerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerThreadFramesBrowserWidget.h"
diff --git a/src/SeerTildeLogWidget.cpp b/src/SeerTildeLogWidget.cpp
index 5838aaa..2d23e9f 100644
--- a/src/SeerTildeLogWidget.cpp
+++ b/src/SeerTildeLogWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerTildeLogWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QScrollBar>
diff --git a/src/SeerTildeLogWidget.h b/src/SeerTildeLogWidget.h
index 55920c0..886e055 100644
--- a/src/SeerTildeLogWidget.h
+++ b/src/SeerTildeLogWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerLogWidget.h"
diff --git a/src/SeerTypeBrowserWidget.cpp b/src/SeerTypeBrowserWidget.cpp
index 6cd8523..41cbc4f 100644
--- a/src/SeerTypeBrowserWidget.cpp
+++ b/src/SeerTypeBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerTypeBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerTypeBrowserWidget.h b/src/SeerTypeBrowserWidget.h
index 50ed4f0..02d4df4 100644
--- a/src/SeerTypeBrowserWidget.h
+++ b/src/SeerTypeBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerUtl.cpp b/src/SeerUtl.cpp
index 3c2a4ed..17053b5 100644
--- a/src/SeerUtl.cpp
+++ b/src/SeerUtl.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerUtl.h"
 #include <QtCore/QFile>
 #include <QtCore/QString>
diff --git a/src/SeerUtl.h b/src/SeerUtl.h
index 7323360..78d6990 100644
--- a/src/SeerUtl.h
+++ b/src/SeerUtl.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 #include "QStringPair.h"
 #include <QtCore/QString>
diff --git a/src/SeerVarVisualizerWidget.cpp b/src/SeerVarVisualizerWidget.cpp
index 40d4ef0..e3c106c 100644
--- a/src/SeerVarVisualizerWidget.cpp
+++ b/src/SeerVarVisualizerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerVarVisualizerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerVarVisualizerWidget.h b/src/SeerVarVisualizerWidget.h
index f5a8703..29fdf90 100644
--- a/src/SeerVarVisualizerWidget.h
+++ b/src/SeerVarVisualizerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerVariableLoggerBrowserWidget.cpp b/src/SeerVariableLoggerBrowserWidget.cpp
index bc1d6a1..e322f5a 100644
--- a/src/SeerVariableLoggerBrowserWidget.cpp
+++ b/src/SeerVariableLoggerBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerVariableLoggerBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerVariableLoggerBrowserWidget.h b/src/SeerVariableLoggerBrowserWidget.h
index 44210b5..8b84a1e 100644
--- a/src/SeerVariableLoggerBrowserWidget.h
+++ b/src/SeerVariableLoggerBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerVariableManagerWidget.cpp b/src/SeerVariableManagerWidget.cpp
index 7a212db..8578296 100644
--- a/src/SeerVariableManagerWidget.cpp
+++ b/src/SeerVariableManagerWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerVariableManagerWidget.h"
 #include "SeerHelpPageDialog.h"
 #include "QHContainerWidget.h"
diff --git a/src/SeerVariableManagerWidget.h b/src/SeerVariableManagerWidget.h
index 90269a3..136c6ed 100644
--- a/src/SeerVariableManagerWidget.h
+++ b/src/SeerVariableManagerWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include "SeerVariableTrackerBrowserWidget.h"
diff --git a/src/SeerVariableTrackerBrowserWidget.cpp b/src/SeerVariableTrackerBrowserWidget.cpp
index 2741e93..80e5530 100644
--- a/src/SeerVariableTrackerBrowserWidget.cpp
+++ b/src/SeerVariableTrackerBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerVariableTrackerBrowserWidget.h"
 #include "SeerUtl.h"
 #include <QtWidgets/QTreeWidget>
diff --git a/src/SeerVariableTrackerBrowserWidget.h b/src/SeerVariableTrackerBrowserWidget.h
index 3f91269..62bd10b 100644
--- a/src/SeerVariableTrackerBrowserWidget.h
+++ b/src/SeerVariableTrackerBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/SeerWatchpointCreateDialog.cpp b/src/SeerWatchpointCreateDialog.cpp
index 2d5fa46..e6ce608 100644
--- a/src/SeerWatchpointCreateDialog.cpp
+++ b/src/SeerWatchpointCreateDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerWatchpointCreateDialog.h"
 #include <QtWidgets/QButtonGroup>
 
diff --git a/src/SeerWatchpointCreateDialog.h b/src/SeerWatchpointCreateDialog.h
index 28821ee..0538813 100644
--- a/src/SeerWatchpointCreateDialog.h
+++ b/src/SeerWatchpointCreateDialog.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QDialog>
diff --git a/src/SeerWatchpointsBrowserWidget.cpp b/src/SeerWatchpointsBrowserWidget.cpp
index c1e6796..87fbdde 100644
--- a/src/SeerWatchpointsBrowserWidget.cpp
+++ b/src/SeerWatchpointsBrowserWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerWatchpointsBrowserWidget.h"
 #include "SeerWatchpointCreateDialog.h"
 #include "SeerUtl.h"
diff --git a/src/SeerWatchpointsBrowserWidget.h b/src/SeerWatchpointsBrowserWidget.h
index 39689d4..fad0046 100644
--- a/src/SeerWatchpointsBrowserWidget.h
+++ b/src/SeerWatchpointsBrowserWidget.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #include <QtWidgets/QWidget>
diff --git a/src/resources/mi-python/MICatchpoint.py b/src/resources/mi-python/MICatchpoint.py
index 5ef0276..8b30655 100644
--- a/src/resources/mi-python/MICatchpoint.py
+++ b/src/resources/mi-python/MICatchpoint.py
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Ernie Pasveer <epasveer@att.net>
+#
+# SPDX-License-Identifier: MIT
+
 #
 # Python MI command to manage gdb's "catchpoint" command..
 #
diff --git a/src/resources/mi-python/MICheckpoint.py b/src/resources/mi-python/MICheckpoint.py
index 57362ee..f340bef 100644
--- a/src/resources/mi-python/MICheckpoint.py
+++ b/src/resources/mi-python/MICheckpoint.py
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Ernie Pasveer <epasveer@att.net>
+#
+# SPDX-License-Identifier: MIT
+
 import re
 
 #
diff --git a/src/resources/mi-python/MIEcho.py b/src/resources/mi-python/MIEcho.py
index cca7760..f5f40af 100644
--- a/src/resources/mi-python/MIEcho.py
+++ b/src/resources/mi-python/MIEcho.py
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Ernie Pasveer <epasveer@att.net>
+#
+# SPDX-License-Identifier: MIT
+
 #
 # Gdb's own custon Python MI command.
 #
diff --git a/src/resources/mi-python/MIKill.py b/src/resources/mi-python/MIKill.py
index 6bfab3c..558d63a 100644
--- a/src/resources/mi-python/MIKill.py
+++ b/src/resources/mi-python/MIKill.py
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Ernie Pasveer <epasveer@att.net>
+#
+# SPDX-License-Identifier: MIT
+
 import re
 
 #
diff --git a/src/resources/mi-python/MISkip.py b/src/resources/mi-python/MISkip.py
index 1b73218..ef9b78c 100644
--- a/src/resources/mi-python/MISkip.py
+++ b/src/resources/mi-python/MISkip.py
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Ernie Pasveer <epasveer@att.net>
+#
+# SPDX-License-Identifier: MIT
+
 import re
 
 #
diff --git a/src/seergdb.cpp b/src/seergdb.cpp
index ee4b64f..44178ed 100644
--- a/src/seergdb.cpp
+++ b/src/seergdb.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 - 2025 Ernie Pasveer <epasveer@att.net>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include "SeerMainWindow.h"
 #include "SeerUtl.h"
 #include "QProcessInfo.h"