\starttext

\definecolor[tblue][b=.5] % ,t=.25,a=1]
\setupbars[rulethickness=.1,color=blue]

%Test \touchbar  {Test \touchbar  {Test \touchbar  {Test} Test} Test} Test \blank
Test \overstrike{Test \overstrike{Test \overstrike{Test} Test} Test} Test \blank
Test \underbar  {Test \underbar  {Test \underbar  {Test} Test} Test} Test \blank
Test \overbar   {Test \overbar   {Test \overbar   {Test} Test} Test} Test \blank
Test \underbar  {Test \overbar   {Test \overstrike{Test} Test} Test} Test \blank
Test \overstrike{Test \overstrike{\red
                                  Test \overstrike{Test} Test} Test} Test \blank

\startbar[underbar]  \input tufte \stopbar \blank
\startbar[underbars] \input tufte \stopbar \blank

\page

\definebar[backbar] [method=0,offset=1,rulethickness=2,color=tblue,continue=yes,order=background]
\definebar[forebar] [method=0,offset=1,rulethickness=2,color=tblue,continue=yes,order=foreground]

from here {\white\startbar[backbar]\input tufte\relax\stopbar\removeunwantedspaces}\space till here \blank
from here \startbar[forebar]\input tufte\relax\stopbar\removeunwantedspaces\space till here \blank

\starttabulate[|l|p|p|]
\NC test \NC \startbar[underbar] \input tufte \stopbar \NC \input knuth \NC \NR
\NC test \NC \startbar[underbar] \input tufte \stopbar \NC \input knuth \NC \NR
\NC test \NC \startbar[underbar] \input tufte \stopbar \NC \input knuth \NC \NR
\NC test \NC \startbar[underbar] \input tufte \stopbar \NC \input knuth \NC \NR
\stoptabulate

\stoptext
