ref: 5513dae7d9eee46f7e1843c8eeeaf9066d0ec632
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}"