Recently I tried an experiment learning about using tag characters on a web page.
There is a link on that web page to a font that I produced in 2009 that has visible glyphs for the tag characters.
At that time the tag characters had been deprecated in Unicode, yet most of them are now no longer deprecated.
Two files (namely tagtests.htm and a pdf linked from within tagtests.htm) are linked directly from the following web page, the links are currently at the lower end of the page.
An interesting note is that I found the font file from a post in this forum.
I remembered that I had made a font with tag characters in it but I did not remember why I had made it.
I downloaded the font file from this forum, tested it, installed it on my computer and then uploaded it to my family webspace.
In the event, although I am now using tag characters for a different purpose than the purpose for which I made the font, the font, unaltered, has now been of great usefulness to me in my research.
William Overington
13 January 2016