User`s guide

On Keyboard Data Indicates whether or not the character created by
the compose sequence is on the keyboard in DATA
mode.
Type Inidicates whether or not the character created by
the compose sequence is on the keyboard in TYPE
mode.
Sequence Lists the compose sequences used to create the
composed character.
Dead Diacritical Keys Lists dead diacritical keys supported on the
keyboard for that country.
Unimplemented Keys Lists keys that are ignored.
USASCII Indicates character is US character set.
NRC Indicates character is in National Replacement set.
Each language keyboard has two modes for setting characters: DATA mode and
TYPE mode. DATA mode sets certain characters that are appropriate for program
development. DATA mode is the default mode setting. TYPE mode sets certain
characters that are more appropriate for word processing.
The keyboard tables are divided into DATA and TYPE modes. The characters that
are set when you specify DATA or TYPE mode are listed in the corresponding sections
in each language keyboard table.
National Replacement Character Sets C–3