preamble "\\documentclass{index}
\\begin{document}\n
\\chapter{索　引}[index0001]\n
\\begin{theindex}\n\n"
postamble "\n\n\\end{theindex}\n\n\\end{document}\n"

lethead_prefix "\n\\letter{"
lethead_suffix "}\n"
lethead_flag 1

delim_0 "\\delimi "
delim_1 "\\delimii "
delim_2 "\\delimiii "
delim_r "\\delimr "
delim_n "\\delimn "