System Requirements
This website uses HTML 4.01 and Cascading Style Sheets (CSS). All recent browsers support it.
Most of the data was entered on an Apple Macintosh and most of the testing has been done on the platforms macOS and Linux.
Some PDF-files are available and can be viewed with Adobe Acrobat Reader, which is
available for many platforms.
Some DjVu-files are available and can be viewed with a DjVu-viewer, which is available for many platforms.
The HTML-code has been parsed through the validator of the World Wide Web Consortium, which sets the standards of the Internet. This way all these pages can be read on any platform and with every browser.