.ps 20,50,0,0,1 .header spacing 1
.first title Change bar test for VT100
.subtitle 20 x 50 .ebb 5,2
.ebb 5,2
.nf
.req "vt100"
This line has no bar
.keep.bb
This line has bar

.eb
This line has no bar
.f;Only underlined text has a change bar.
If any other text has a change bar it is wrong.
.begin bar
^&Can you locate the text with change bar ?\&
.end bar
When you find it check to see if it is correct!