As well the original TeX manual as ConTeXt's one try to dissuade one of enquiring deeper into the subject of hyphenation patterns. For several reasons not to be explained at this moment this is however what I want to do. I have read all that I have found about the subject and think to have got a rather clear idea of the fundamental concepts. But I have been unable to understand how they are applied and can be managed in ConTeXt. So I would eagerly receive instruction about this question from someone who is competent enough in the field. As I understand that this is too involved a subject and of too little general interest for the mailing list, I suggest that any potential teacher sends me a private mail (fgragu023@gmail.com). I am ready to consider this as a consultorship or tutorship. Thanks in advance Francisco