preamble "\\def\\indexname{Er\\\"offnungs\\\"ubersicht}\n
\\begin{theindex}"
group_skip ""
item_0 "\n \\item "
item_1 "\n \\subitem{\\bf "
item_01 "\n \\subitem{\\bf "
item_x1 "\n \\subitem{\\bf "
delim_0 " "
delim_1 "} "
delim_n ", "
delim_t ""