.mso hdtbl.tmac
.ds t*bgc white\" background color
.ds t*fgc black\" foreground color
.ds t*bc black\"  border color
.nr t*cpd 0.3n\"  cell padding
.nr t*csp 0\"  cell spacing
.TBL cols=3 "width=2m 2m 12m" hal=c
. TR
.  TH colspan=3 fgc=white bgc=black Janvier
. TR
.  TD M
.  TD 1
.  TD
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.  TD J
.  TD 2
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. TR bgc=grey
.  TD D
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.  TD
. TR
.  TD L
.  TD 6
.  TD hal=l
 \Z@\v'-1v'\L'5v'@ThingA
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. TR bgc=grey
.  TD D
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.  TD
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.  TD L
.  TD 13
.  TD
nl=\n[nl]
.nr testA \n[nl]
.mk testB
mk=\n[testB]
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.  TD M
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.  TD
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. TR bgc=grey
.  TD D
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.  TD
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.  TD
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.  TD M
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.  TD
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.  TD
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.  TD hal=r ThingB
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.  TD
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.  TD
. TR bgc=grey
.  TD D
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.  TD
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.  TD M
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.  TD
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.  TD V
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.ETB
.\" try to use testA register
 \v'|\n[testA]u'ThingC
.\" try to use absolute positions (a char seems necessary before \v'')
 \v'|10.9v'\h'5m'\Z@\v'-1v'\L'5v'@ThingD