\HL
\NC \use{2}\ReFormat[cB]{Spanning head} \SR
\HL
\NC \Use{2}[cB]{Spanning head} \SR % slightly shorted
\HL
\NC left column text \VL right column text \NC \AR
\HL
\NC \use{2}\ReFormat[cB]{Spanning head} \SR
\HL
\NC \Use{2}[cB]{Spanning head} \SR
\HL
\NC left column text \VL right column text \NC \AR