ref: 5f42bde60275e9a0c3d317ee1e052e1aefdcdb19
dir: /sys/lib/tmac/tmac.sdisp/
. \"DS - display. If .DS C, center; L, left-adjust; I, indent.
.de DS
.KS
.nf
.\\$1D \\$2 \\$1
.ft 1
.if !\\n(IF \{\
. ps \\n(PS
. ta 5n 10n 15n 20n 25n 30n 35n 40n 45n 50n 55n 60n 65n 70n 75n 80n
. ie \\n(VS>=41 .vs \\n(VSu
. el .vs \\n(VSp\}
..
.de D
.ID \\$1
..
.de CD
.XD
.ce 1000
..
.de ID
.XD
.if t .in +0.5i
.if n .in +8
.if \\n(.$ .if !"\\$1"I" .if !"\\$1"" .in \\n(OIu
.if \\n(.$ .if !"\\$1"I" .if !"\\$1"" .in +\\$1n
..
.de LD
.XD
..
.de XD
.nf
.nr OI \\n(.i
.sp \\n(DVu
..
.de BD \" block display: save everything, then center it.
.XD
.nr BD 1
.nf
.in \\n(OIu
.di DD
..
. \"DE - display end
.de DE
.ce 0
.if \\n(BD>0 .DF
.nr BD 0
.in \\n(OIu
.KE
.sp \\n(DVu
.fi
..
.de DF \" finish a block display to be recentered.
.di
.if \\n(dl>\\n(BD .nr BD \\n(dl
.if \\n(BD<\\n(.l .in (\\n(.lu-\\n(BDu)/2u
.nr EI \\n(.l-\\n(.i
.ta \\n(EIuR
.nf
.DD
.in \\n(OIu
..