Hi I have now found the following document.
http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf William Overington Friday 31 August 2018 ----Original message---- >From : [email protected] Date : 2018/08/31 - 21:43 (GMTDT) To : [email protected], [email protected] Subject : Re: Private Use areas Hi Thank you for your posts from earlier today. Actually I learned about JSON yesterday and I am thinking that using JSON could well be a good idea. I found a helpful page with diagrams. http://www.json.org/ Although I hope that a format of recording information about the properties of particular uses of Private Use Area characters will become implemented as a practicality, and that that format can be applied in practice where desired, and indeed I would be happy to participate in a group project, I do not know enough about Unicode properties to play a major role or to lead such a project. William Overington Friday 31 August 2018
