Back when I did telecommunication standards, there was a requirement for various ITU standards to contain a Z notation specification. I started to review variou

Back when I did telecommunication standards, there was a requirement for various ITU standards to contain a Z notation specification. I started to review various books on the topic and but stopped when I found out that the consensus amongst the people I dealt with was that it was very difficult and best left to a professional. I had other things to worry about, so I never spent the time to really understand it.