Tag characters and in-line graphics (from Tag characters)

[Ken Whistler]

On 6/2/2015 2:01 AM, William_J_G Overington wrote:
> Local glyph memory, for use in compressing a document where the same 
> glyph is used two or more times in the document:

Um, that technology already exists. It is called a "font".

>
>
> A mechanism to be able to use the method to define a glyph linked to a 
> Unicode code point would be a useful facility to add for use in a 
> situation where the glyph is for a regular Unicode character.

And that mechanism has also already been defined. It is called a "cmap":

http://www.microsoft.com/typography/otspec/cmap.htm

--Ken