Template:Keyboard layouts
OLPC keyboard layouts
English (US international); Spanish (Argentine); Portuguese (Brazilian); Amharic (Ethiopic); Arabic; West African; French; Thai; Urdu; Cyrillic; Turkish; Nepali; Mongolian; Kazakh; Devanagari; Uzbek; Pashto; Dari
Console keyboard layout files are in /lib/kbd/keymaps/i386. You can access the console by typing Ctrl+Alt+F1 (F1 is 
); log in as root with no password; type Ctrl+Alt+F3 to return to Sugar (F3 is 
).
loadkeys dvorak loadkeys us
X keyboard layout files are in /usr/share/X11/xkb/symbols.
setxkbmap dvorak setxkbmap us
The layout switching key (misnamed the language key) is times-divide, just above right arrow. On Arabic and some other XOs it has a different graphic, indicating two alphabets to switch between.
In the Arabic layout, it is defined as
// Language key
key <I219> { [ ISO_Next_Group, ISO_Prev_Group ] }
In the International US English layout, it is defined as
key <I219> {[ multiply, division,ISO_Next_Group,ISO_Prev_Group ]}
Some current layouts, including Dvorak, fail to define a language key.
Please see Customizing_NAND_images#Keyboard for more details.