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License & Credits



The site and it's original source code are copyright © 2022 by Peter Johnson.


The content of the website is licensed under the Creative Commons Attribution 4.0 International (CC BY-4.0) license.

The site's source code is licensed under the MIT License.

The main site's source code is maintained in the following Git repositories on GitHub:


Both the main site and tips micro site are hosted by GitHub Pages.

Both sites are static sites generated using Jekyll.

Third Party Code

The main site uses the following 3rd party code. Some is linked to by each web page while others are included with the site source code.

  • Bootstrap v3, copyright © 2011-2019 Twitter, Inc. – licensed under the MIT license.
  • normalize.css v8. Copyright © Nicolas Gallagher and Jonathan Neal. Licensed under the MIT License.
  • jQuery v1.11 (provided by the jQuery CDN), copyright © 2005, 2014 jQuery Foundation, Inc. – licensed under the jQuery License.
  • StyleFix 1.0.3 & PrefixFree 1.0.7 JavaScript code by Lea Verou – licensed under the MIT license.
  • Cookie consent code provided by
  • Fonts (provided by the Google Fonts CDN):
    • Open Sans & Open Sans Condensed. Licensed under the Apache License, Version 2.0
    • Libre Baskerville italic. Copyright © 2012, Pablo Impallari & Rodrigo Fuenzalida – licensed under the SIL OFL v1.1
    • Source Code Pro. Copyright 2010, 2012 Adobe Systems Incorporated, with Reserved Font Name 'Source'. All Rights Reserved. Source is a trademark of Adobe Systems Incorporated in the United States and/or other countries. licensed under the SIL OFL v1.1
  • Font Awesome (provided by the Bootstrap CDN). The Font Awesome font is licensed under the SIL OFL v1.1 license. Font Awesome CSS, LESS, and Sass files are licensed under the MIT license.

The tips micro site uses:

  • Bootstrap v4, copyright © 2011-2020 The Bootstrap Authors and © 2011-2020 Twitter, Inc. Licensed under the MIT license.