[BRLTTY] The unknown-character sign (26)

[Jason White]

On Sun, Nov 23, 2008 at 09:37:44AM +0100, Mario Lang wrote:
> My question is, can
> we make the unknown-character representation configurable from
> within contraction tables?  If no, I'd like to argue
> for 12345678 as the new representation for unknown characters.

I'm sure it can be made configurable in the contraction tables with a certain
amount of coding effort.

After that, perhaps the default for each table should be the local
representation of the question mark, combined with either dot 7 or dot 8.

In the German table this would be dots 2-6-7 or 2-6-8. Likewise, in North
American computer braille, we would use 1-4-5-6-7 or 1-4-5-6-8.

This way, we would still have the mnemonic advantage of a question mark, but a
character distinct from it.