> On 13 Feb 2020, at 16:41, wjgo_10...@btinternet.com via Unicode > <email@example.com> wrote: > > Yet a Private Use Area encoding at a particular code point is not unique. > Thus, except with care amongst people who are aware of the particular > encoding, there is no interoperability, such as with regular Unicode encoded > characters. > > However faced with a need for interoperability for my research project, I > have found a solution making use of the Glyph Substitution capability of an > OpenType font. > > The solution is to invent my own encoding space. This sits on top of Unicode, > could be (perhaps?) called markup, but it works!
It may be perilous, because some software may enforce the strict official code point limits.