Vit Zyka posted some notes on an impressive book layout that he did a while ago. http://archive.contextgarden.net/message/20060525.084738.3f1d8e4a.en.htmlhttp://archive.contextgarden.net/message/20060525.084738.3f1d8e4a.en.html
Thanks for the pointer. That is a good example.
The magazines use s-mag-01.tex for layout. Most magazines of pragma website have the "source code" at the end of the magazine. The sources of the magazines and context manuals are available at the svn repository. You can browse it at http://context.aanhet.net/svn/manualshttp://context.aanhet.net/svn/manuals or download the manuals from svn://ctx.pragma-ade.nl/manuals
I din't know of this repository. I tried to search all over the site but couldn't find it. So, once again thanks for the pointer.
I think that now I have some good material I can study.
All the best,