Provided you are a person (and not a corporate entity), you may make as many copies of Macaulay 2 as you like for your personal non-commercial use. You may install copies of Macaulay 2 on computers owned by Universities, Colleges, High Schools, and other schools in such a way that students and staff of those institutions may use it. You may modify and distribute the source code in the Macaulay 2 language we provide you, but you must retain our copyright notices and mark modified source code so others will know that it's been modified. You may print out the manual and make copies of it for your personal use.
If your intended use of Macaulay 2 is not covered by the license above, please contact us so we can work something out. Notice that in the license above we have not granted you permission to make copies of Macaulay 2 to be sold, distributed on media which are sold, or distributed along with software which is sold. We have not granted you permission to make derivative works, or to distribute them. If you encounter a copy which appears not to conform to the terms of the license above, we would like to hear about it.
Various libraries have been compiled into Macaulay 2.
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