This product (software, documents, and data files) is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License (legal text). You are free to copy and redistribute this material in any medium or format, and to remix, transform, and build upon the material for any purpose, including commercially. You must give credit, provide a link to the license, and indicate if changes were made. If you remix, transform, or build upon this material, you must distribute your contributions under the same license as the original.
This product is provided with no warranty, either expressed or implied, including but not limited to any implied warranties of merchantability or fitness for a particular purpose, regarding these materials and is made available available solely on an “as-is” basis.
In no event shall John Walker be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of distribution or use of these materials. The sole and exclusive liability of John Walker, regardless of the form of action, shall not exceed the compensation received by the author for the product.
John Walker reserves the right to revise and improve this products as he sees fit. This publication describes the state of this product at the time of its publication, and may not reflect the product at all times in the future.