By ‘on this site, at this website, etc. is meant any file or files (text, image, audio or video recording) whose URL starts with any of the following prefixes:  https://tagg.org/  https://tagg.org/  www.tagg.org/
The idea is to make as much information and as many ideas as possible available to as many as possible of those involved in education and research without them having to pay for it. You are in other words welcome to quote, borrow, or otherwise use, free of charge, any materials (ideas, information, images, music, video etc.) appearing on this site (as defined above) according to the following conditions and exceptions.
Conditions and exceptions
If you use any of my materials, or those of my students, in your teaching or research, or on your blog, etc. it would be useful to me and to the advantage of this site if you could let me know. Thank you.