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.\" Implementation of the ATK PB and PE macros for use with groff and grops.
.\" Load this after tmac.atk.
.nr zT 0
.if '\*(.T'ps' .nr zT 1
.nr psatk-unit 1p
.de psatk-defs
ps: mdef 5
/PB {
/saved save def
currentpoint translate
\n[psatk-unit] u -\n[psatk-unit] u scale
userdict begin
/showpage {} def
} bind def
/PE {
end
saved restore
} bind def
/troffadjust {
pop 0
} bind def
..
.de PB
.ne \\$1p
.nr zT \\n(zT>0
\\*[PB\\n(zT]\\
..
.de PE
\\*[PE\\n(zT]\\
..
.ds PB0
.\" The last line before the "'PE" is "\}" rather than ".\}". This
.\" would cause a spurious space to be introduced before any picture
.\" that was the first thing on a line. So we have to catch that and
.\" remove it.
.de PB1
.ev psatk
.fi
.di psatk-mac
\!ps: exec PB
..
.de PE0
\v'-.75m'\
\D'l \\$1p 0'\D'l 0 \\$2p'\D'l -\\$1p 0'\D'l 0 -\\$2p'\
\h'\\$1p'\v'.75m'\x'\\$2p-1m>?0'\c
..
.ds psatk-init \Y[psatk-defs]
.de PE1
\!PE
.di
.di null
.br
.di
.rm null
.ev
\v'-.75m'\
\\*[psatk-init]\Y[psatk-mac]\
\h'\\$1p'\v'.75m'\x'\\$2p-1m>?0'\c
.rm psatk-mac
.if \\n(.P .ds psatk-init
..
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