(I'm not sure if this is off-topic or not. But since Alain copied his
reply to the Unicode list, I suppose it is not too off-topic.)
Your reply makes me worried.
On my Windows (NT 4) (Swedish) keyboard I get a "level 3" as you
describe. This behaviour I find highly undesirable, since that is not
what I want. This "level 3" is very sparsely populated with any
characters, and (plain) shift together with "alt Gr" gives nothing.
Likewise, no characters are generated via the other "alt" key. This is
next to useless! I get hold of only 9 characters via this "level 3".
And I have to switch keyboard mapping or use the char map utility to
write e.g. Ø.
On my MacOS (8) (Swedish) keyboard I get a quite different
behaviour, which I have interpreted as a "group 2". Both "alt" keys are
equivalent and they work together with the ordinary shift keys (I stick
to that terminology for the time being...). So, e.g. , shift-ö
generates Ö, alt-ö generates ø, alt-shift-ö generates Ø. In addition
both alt-levels are fully populated with characters. This is the
behaviour that I want (even though the character assignments could
sometimes be slightly different). This is a much more useful behaviour!
> -----Ursprungligt meddelande-----
> Från: Alain LaBonti - 2 [SMTP:email@example.com]
> Skickat: den 12 december 1997 22:10
> Till: Kent Karlsson firstname.lastname@example.org
> Ämne: Re: SV: FPDAM 1 to ISO/IEC 9995-3 for *international* keyboard
> support of the EURO SIGN
> A 20:41 12/12/97 +0100, Kent Karlsson email@example.com a écrit :
> >Hi Alain!
> >I'm a bit puzzled...
> >I have no problem in understanding what levels 1 and 2 are (no-shift
> >shift), likewise I find no problem with groups 1 and 2 (no-alt and
> >I believe).
> >But what is level 3? I have never come across a (character) keyboard
> >where the shift-keys had more than two "levels" (physically), up and
> >down, or were sensitive to how hard they were pressed...
> >Since keyboards usually have two shift keys, I could imagine three
> >levels via: 1. neither shift key down, 2. either but not both shift
> >keys down, and 3. both shift keys down. Is that the intent? Or is
> >just a stupid idea I just got ;-)?
> >Sorry for not having the text of any of the parts of 9995.
> > Kind regards
> > /Kent Karlsson
> [Alain] :
> All European keyboards have 3 levels:
> no shift key
> shifted key
> <AltGr>-shifted key
> Only American keyboards have only one kind of shift key (even if there
> usually 2 of them, one on the left, one on the right).
> Now the term 'Shift' is deprecated in ISO/IEC. Because there are 2
> 'shifts', because there is a great confusion in terms with AltGr,
> AltChar, and with the distinct function that is Alt, and this in many
> languages, we now talk about:
> level 1 - obtained by depressing a key directly
> level 2 - obtained by actuating the Level 2 Select key while
> an alphanumeric key
> level 3 - obtained by actuating the Level 3 Select key while
> an alphanumeric key
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