Preferences - Character Settings(Section):lower case char.sequence key
<chars_in_lower_case idx="INDEX" perm="PERMISSIONFLAG">VALIDVALUE</chars_in_lower_case>
Define which characters should appear one after another each time numpad key INDEX (INDEX ranges from 0 to 9) gets pressed (when input mode is set to lower case letters).
Character string values.
empty -> language dependent default value is used