[NTG-context] Sources of Tutorial.text.pdf

Hi everyone, looking here and there on the Internet, I found a very interesting document by Aditya Mahajan and Willi Egger: *Beginners Tutorial. ConTeXt *( Tutorial-text.pdf), written in 2008 for the 2nd International ConTeXt User Meeting in Bohinj, Slovenia. This is a very interesting booklet, for me, congratulations to the authors! Are there also the sources of it, somewhere? I'd like to get some ideas for the ConTeXt guide in Italian that I'm planning. In particular, I appreciated the way in which the commands are presented: «do you need to do this? well, the commands that are useful to you are this and that». I really appreciated that. :-) Thank you in advance Thomas