If you have any questions, feel free to contact me at Please note that I may not always be able to provide detailed support, or I may be too busy at the moment. But I would like to help, so it doesn’t hurt to ask!


Similarly, if you just have a comment to share, go ahead and send it to me at If your comment is particularly interesting and you give your permission, I may add it to the corresponding page.


You are welcome to suggest changes, particularly if you find any mistakes. Just contact me at

In some cases, it may be more convenient to send the changes directly:

  1. Download the corresponding Markdown source file, which is at the same URL but with the .md extension. Most pages also have a direct link on the left panel (or near the top of the page) titled “plain text (Markdown)”.
  2. Make your suggested changes using a text editor. If you’re using Windows, I suggest adding .txt to the filename, then editing the file with WordPad or Gedit (Notepad will not recognize the line endings).
  3. Send the modified file to me at

Please contact me before doing extensive work on suggested changes to avoid concurrent work in different directions.