Dear list, I have the following sample: \setuppapersize[A7] \starttext \definecolumnset [paral] [n=2] \definesubcolumnset[paral][1][1] \definesubcolumnset[paral][2][2] \startcolumnset[paral] \startsubcolumnset[1] abce \stopsubcolumnset \startsubcolumnset[2] abcd \stopsubcolumnset \flushsubcolumnsets[spread] \startsubcolumnset[1] abc% \inframed [background=color, backgroundcolor=lightgreen, frame=off] {e} \stopsubcolumnset \startsubcolumnset[2] abc% \inframed [background=color, backgroundcolor=lightred, frame=off] {d} \stopsubcolumnset \flushsubcolumnsets[spread] \stopcolumnset \stoptext What I want to achieve is automatic text comparison between versions of the same text (in different subcolumnsets). The first line shows different versions text. I wonder whether there would be an automatic way to get the \inframed highlighting with any character that differs from the other column (it might be different, or just missing or being added). I think this may be possible with ConTeXt, but I don’t know how to achieve it automagically. Any ideas on how to get this automatic text comparison? Many thanks in advance, Pablo