Martin Kochanski wrote:
> In writing a manual, I want to show examples of what a display looks like
> when a font doesn't have a particular character.
I suggest, you also show examples of what a display looks like when a
data-stream is not encoded properly,
e. g. <http://www.systems.uni-konstanz.de/EMAIL/FAQ.php#SMTP-71>,
when it is not tagged with the correct encoding,
e. g. <http://www.systems.uni-konstanz.de/EMAIL/FAQ.php#SMTP-72>,
or when it is distorted by intermediate processing unaware of the encoding
used, e. g. <http://www.systems.uni-konstanz.de/EMAIL/FAQ.php#SMTP-73>.
> What Unicode character would best represent the "missing character" symbol?
I would use an image (actual screen-shot).
If you really need to encode those "missing characters", U+25AF and U+2337
spring to mind. Or you could use a code-point that has no character assigned
to it (and is not likely to get one), e. g. U+03A2: most systems will use
their respective missing-character glyphs to display it.
Best wishes,
Otto Stolz
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