. \" XS - begin index entry
. \" XA - add index entry
.if !
\a\\*(XL
\ano
\a \\a\\t\\*(XL
. \" XE - end index entry
.if !
\a\\*(XL
\ano
\a \\a\\t\\*(XL
. \" PX - print index (table of contents)
.if \\n(VS>=40 .vs \\n(VSu
.if \\n(VS<=39 .vs \\n(VSp
. tl ''\f3\s+2Table of Contents\s-2\f1''
. \" TC - table of contents at end of paper
. \" NH - numbered section header
.if !\\$1 .if \\n(.$ .nr H1 1
.if \\n(NS-1 .as SN \\n(H2.
.if \\n(NS-2 .as SN \\n(H3.
.if \\n(NS-3 .as SN \\n(H4.
.if \\n(NS-4 .as SN \\n(H5.