include::./links.adoc[] _{prog}_ is free software: you may redistribute 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. _{prog}_ 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 documentation. If not, see {gnu_gpl}. Development _{prog}_ is a cooperative project to which many authors have contributed. If you use our source code, please have the courtesy to let us know about it. If you find bugs or make improvements to the code, please report them to us in a timely fashion. Except where otherwise noted, all algorithms, protocol designs, source code, and supporting files contained in the _{prog}_ package are the intellectual property of the program's authors. The authors assert *Copyright ownership* of this material, whether or not such copyright notice appears in each individual file. Others who make fair use of our work under terms of the GNU General Public License must display the following copyright notice prominently: *The algorithms, source code, look-and-feel of _{prog}_ and related programs, and protocol specifications for the modes FSK441, FT4, FT8, JT4, JT6M, JT9, JT65, JTMS, QRA64, ISCAT, and MSK144 are Copyright (C) 2001-2020 by one or more of the following authors: Joseph Taylor, K1JT; Bill Somerville, G4WJS; Steven Franke, K9AN; Nico Palermo, IV3NWV; Greg Beam, KI7MT; Michael Black, W9MDB; Edson Pereira, PY2SDR; Philip Karn, KA9Q; and other members of the WSJT Development Group.*