In regards to the License screen on which you have to read and agree to the terms of the license during the installation of the software:
leave the text of the original Archivists’ Toolkit TM license but preface it with the following wording at the top of the window:
“Although ATReference 2.5 was not developed by the original copyright holders of Archivists' Toolkit TM, it has been based on that open-source product and its installation and use require acceptance of the original AT license agreement.”
In regards to the License screen on which you have to read and agree to the terms of the license during the installation of the software: leave the text of the original Archivists’ Toolkit TM license but preface it with the following wording at the top of the window:
“Although ATReference 2.5 was not developed by the original copyright holders of Archivists' Toolkit TM, it has been based on that open-source product and its installation and use require acceptance of the original AT license agreement.”