Edit: /usr/share/X11/locale/ja/Compose (345B)
#
# ja Compose Sequence
#
# Sequence Definition
#
#
# This file currently has no entries. It appears that a compose file (even
# just an empty one) is required for the appropriate keysyms to work for
# this encoding.
#
#
Means
# Special Character
# End of Sequence Definition