ref: 5d6d894325d59f49cd559251b4d65b1cb3f66f35
dir: /sys/src/cmd/python/Doc/texinputs/python.ist/
line_max 100
headings_flag 1
heading_prefix " \\bigletter "
preamble "\\begin{theindex}
\\def\\bigletter#1{{\\Large\\sffamily#1}\\nopagebreak\\vspace{1mm}}
"
symhead_positive "{Symbols}"
numhead_positive "{Numbers}"