keyword "IX:"
preamble
".\\\" start of index output

.SH
.ce
\\s+2INDEX\\s-2

.2C
.de IS
.sp 0.5
\\s+2\\fB
.ce
..
.de IE
.sp 0.5
\\s-2\\fP
..
.de I1
.ti 0.25i
..
.de 1I
.ti 0.25i
..
.de I2
.ti 0.5i
..
.de 2I
.ti 0.5i
..\n"
postamble		"\n\n.\\\" end of index output\n"
setpage_prefix		"\n.nr % 1\n"
setpage_suffix		""
group_skip		"\n.sp"
headings_flag		1
heading_prefix		"\n\n\n.IS\n"
heading_suffix		"\n.IE\n"
item_0			"\n.br\n"
item_1			"\n.I1\n"
item_2			"\n.I2\n"
item_01			"\n.I1\n"
item_x1			"\n.1I\n"
item_12			"\n.I2\n"
item_x2			"\n.2I\n"
delim_0			", "
delim_1			", "
delim_2			", "
delim_r			"-"
delim_t			"."
encap_prefix		"\\fB"
encap_infix		""
encap_suffix		"\\fP"
indent_space		"	"
indent_length		8