preamble ""
postamble "\n"
group_skip "\n"
headings_flag 1
heading_prefix "\\letter "
numhead_positive "{}"
symhead_positive "{}"
item_0  "\n  "
item_1  "\n    \\sub "
item_01 "\n    \\sub "
item_x1 ", "
item_2  "\n      \\subsub "
item_12 "\n      \\subsub "
item_x2 ", "
page_compositor "--"
line_max 1000