Mark Davis wrote: > In practice, the keyboards I have seen with an additional level > generally need and use a pair of additional levels. The issue is that > if a lowercase character x is on a level, then you want to be able to > get the uppercase version of it X by using that same level plus a > shift key. So in practice you end up with plain, plain+shifted, > alternate, alternate+shifted.
Keyboards that follow this peculiar requirement of ISO 9995 (three levels but not four) pay a penalty when there are too many letters (accented or otherwise) to fit in Levels 1 and 2, and the national custom is *not* to use combining dead keys. Either the capital and small versions of a letter must be on different keys within the same level (Polish puts Ä at AltGr+S and Ä at AltGr+D) or the capital letter is not assigned to a key at all (Italian has à and à but not à or Ã, which forces users to type E' when starting a sentence with "It is"). -Doug Ewell Fullerton, California http://users.adelphia.net/~dewell/
