.\"
.\"--- try underline to rule conversion
.\"
.ft CR
.ps 20
.vs 30
.nf

UUUUHHHHUUUU

UUUU____UUUU     "____"

UUUU\(ru\(ru\(ru\(ruUUUU     \\(ru inserted

UUUU\(ul\(ul\(ul\(ulUUUU     \\(ul inserted

.tr \(ul\(ru
UUUU____UUUU     "____" and .tr \\(ul\\(ru

.tr _\(ru
UUUU____UUUU     "____" and .tr _\\(ru

UUUUHHHHUUUU
.ex

.\"--- ps by groff
.\"
.\" 1) (UUUUHHHHUUUU)72 60 Q 48
.\" 
.\" 2) (UUUU____UUUU "____")72 120 R
.\" 
.\" 3) (UUUU)72 180 Q .8 LW 130 180 120 180 DL 140 180 130 180 DL 150 180 140
.\"            180 DL 160 180 150 180 DL 48
.\" 
.\"    (UUUU \\\(ru)160 180 R(inserted)12 E
.\" 
.\" 4) (UUUU)72 240 Q 130 245 120 245 DL 140 245 130 245 DL 150 245 140 245 DL
.\"            160 245 150 245 DL 48
.\" 
.\"    (UUUU \\\(ul)160 240 R(inserted)12 E 48
.\" 
.\" 5) (UUUU____UUUU "____")72 300 R(and .tr \\\(ul\\\(ru)12 E
.\" 
.\" 6) (UUUU)72 360 Q 130 360 120 360 DL 140 360 130 360 DL 150 360 140 360 DL
.\"         160 360 150 360 DL 48
.\" 
.\"    (UUUU ")160 360 R 290 360 280 360 DL 300 360 290 360 DL 310 360 300
.\"         360 DL 320 360 310 360 DL 12("a)320 360 S(nd .tr)-12 E 450 360 440 
.\"         360 DL(\\\(ru)450 360 Q
.\"
.\"7) (UUUUHHHHUUUU)72 420 Q 0 Cg EP
.\"
.\"--- notes
.\"
.\"- \(ul is not `_'
.\"       is created by groff (not coming from a font)
.\"       is too narrow
.\"       is too low 
.\"
.\"- \(ru is created by groff (not coming from a font)
.\"       is too narrow
.\"       is at the right height