You are licensed to use, copy, modify, and share the TNT software package according to the terms of the GNU General Public License. The license terms are in the file COPYING included with TNT.
Under the General Public License, you may install and use TNT on any number of computers. You may examine the source code of the program to determine how it works. You may modify the program, hopefully making it better, and you may share the program with others. If you make improvements to TNT, we would appreciate it if you let us know.
Like most software, TNT comes with absolutely no warranty. Fortunatley, if there are problems, you are allowed to examine the source code, recompile the program, and correct the problem.
There are some software components included with TNT that are licensed separately. Printing on Microsoft Windows requires, for example, a print utility by Peter Lerup, which is licensed under terms described in the documentation in printfile215-32.zip. Tcl, Tk, and extensions are licensed under terms similar to those of the Berkely license, which imposes fewer obligations on the user than the GPL. Please refer to each package's license information.