Here is information on keyboards to be shipping with the One Laptop per Child project.

!Arabic

Has both $ and {}.

!Brazil

$ = shift+6.

!Nigeria

$ = alt-gr+6.

!Thai

There are no $ or {} on the typical Thai keyboard: we'd have to use the language key to access those characters (or find room to overlay some Alt-Gr keys. They do have + - / \ ( ) . ? , and |.

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See also: [keyboards]