In order to access the software source code and documentation on this site, you must read and agree to all of the following License terms.

1. All of the software and documentation contained here is copyright (C) 1975 through 2000 by Peter A. Stark, and distributed under license by Star-K Systems. It is not shareware, nor is it in the public domain, and Star-K Systems does not provide any warranty on it whatsoever.

2. You may not make any commercial use of this material. That means that you cannot sell it, and you cannot incorporate it (or parts of it) into commercial products. You also cannot translate it, or use it for any other derivative works for commercial use.

3. You may, however, use it for your own personal use, or allow others to use it for personal use. The precise terms for doing so (excluding commercial use) are the same as those published in the "GNU General Public License" (or GPL) of the Free Software Foundation, Inc. 675 Massachusetts Avenue, Cambridge, MA 02139, USA, which is used to license Linux. If you have any questions about the interpretation of these terms, consult the full text of the GPL, available with any Linux distribution.

Here is a very brief summary of the allowable noncommercial uses, details are more fully described in the GPL:

You may use these materials for your own use. You may also modify this software or documentation and/or incorporate parts of it into materials for your personal use, or for the personal use of others, and/or distribute it to others for their personal use, as long as you
   (a) do not sell the resulting products or materials,
   (b) include this full License text verbatim with your distribution,  and you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients a copy of this License, and ensure that the recipient accepts its terms.
   (c) provide the full source code or documentation for any modifications you have made with your distribution,
   (d) Just as you are receiving these materials at no charge and with no restrictions on personal use, so you must license any work that you distribute or publish, that in whole or in part contains or is derived from these Star-K materials or any part thereof, at no charge to all third parties under the terms of this License.
   (e) If you incur a cost in distributing this software or documentation, or modifications thereof, you may ask recipients to reimburse you for the reasonable cost of media, packaging, and/or postage.

4. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute Star-K materials or their derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing these materials (or any work based on them), you indicate your acceptance of this License to do so, and all its terms and conditions.

The philosophy of this license is quite well expressed in the following portion of the GPL:

"General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or
can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things.

"To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it.

"For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.

"We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software.

"Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations.

"Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all."

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