What would be useful at this point is to specify in the current 2.0
RFC the requirements of a UA in rendering character data. I would
expect these requirements to read something like:
1. An HTML 2.0 UA must be capable of depicting all Latin 1 graphic
characters, that is, those characters in the range 0020 - 007E and
00A0 - 00FF, plus SPACE (0020).
2. An HTML 2.0 UA may optionally depict other graphic characters.
3. An HTML 2.0 UA which cannot depict a graphic character, e.g.,
a character reference whose replacement text has no representation
in the system character set, should depict such a character as either:
- an empty box (i.e., an unknown character glyph)
- a sequence of characters which represent the reference itself
rather than its replacement text, e.g., ￰
4. The same treatment (3) is to be given to SDATA entity references
which cannot be mapped to appropriate system character data.
Glenn