.\"
.\" ----------------------------------------------------------------
.pl 29.7c
.po 2.5c
.ll 16c
.lt 16c
.\" ----------------------------------------------------------------
.ev 1
.ll 16c
.lt 16c
.gcolor blue
.ft 2
.ev
.\" ----------------------------------------------------------------
.de HD
.ev 1
\Y[XX]
.sp |1.5c-1v
.if o .tl '\\*[RH]''%'
.if e .tl '%''\\*[LH]'
.tl ''\v'-0.5v'\D'l \\n[.lt]u 0'''
.sp |3c
.ev
..
.de FO
.ev 1
.sp |29.7c-1.5c-2v
.tl ''\D'l \\n[.lt]u 0'''
.if o .tl '\\*[RF]''%'
.if e .tl '%''\\*[LF]'
.bp
.ev
..
.ds RH right header
.ds LH left header
.ds RF right footer
.ds LF left footer
.wh 0 HD
.wh -3c-1v FO
.\" ----------------------------------------------------------------
.de XX
ps: exec
gsave 72 2.54 div dup scale 1 .9 .8 setrgbcolor
0  0   21  3 rectfill
0 29.7 21 -3 rectfill
grestore
..
.\" ----------------------------------------------------------------
.ft 3
5.2. Extra line-space.
.ft
.de ZZ
.sp .5
If a word contains a tall construct requiring the output line
containing it to have extra vertical space before and/or after it,
the extra-line-space function \\\\x'N' can be embedded in or attached
to that word.
If N is negative, the output line containing the word will be preceded
by N extra vertical space; if N is positive, the output line containing
the word will be followed by N extra vertical space.
If successive requests for extra space apply to the same line, the
maximum values are used.
The most recently utilized post-line extra line-space is available
in the .a register.
..
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