Hi everyone, I’m working on creating a horizontal line within a math align environment that spans the entire equation, rather than being restricted by the columns. My current "solution" is to use `\hl`, as shown below: ``` \startformula \startalign \NC a + b \NC = c \NR \NC d + e \NC = f \NR \NC \hl[4]\NC \hl[4] \NR \NC g + h \NC = i \NR \stopalign \stopformula ``` While this somewhat works, it’s not exactly what I’m aiming for. I need the line to extend across the full width of the equation. My final goal is something like this: \startformula \startalign[n=11] \NC \NC 1001 \NC \rightarrow \NC 1000 \NC + \NC 000 \NC + \NC 00 \NC + \NC 1 \NR \NC + \NC 100 \NC \rightarrow \NC \NC \NC 100 \NC + \NC 00 \NC + \NC 0 \NR % here should be a horizontal line \NC \NC \NC \rightarrow \NC 1000 \NC + \NC 100 \NC + \NC 00 \NC + \NC 1 \NR \NC \NC \NC \rightarrow \NC 1101 \NC \NC \NC \NC \NC \NC \NR % here should be a horizontal line \NC = \NC 1101 \NC \NC \NC \NC \NC \NC \NC \NC \NR \stopalign \stopformula The horizontal line should not take the height of a hole line. I also considered using `\underline{}`, but it wont span across multiple columns. I’ve heard of `\noalign`, but I couldn’t find any helpful resources on it, and my attempts to use it were unsuccessful. In LaTeX, the desired outcome would be something like this: ``` \begin{equation*} \begin{split} x &= 1 \\ y &= 2 \\ \hline x + y &= 3 \end{split} \end{equation*} ``` Does anyone have suggestions for achieving this effect in ConTeXt? Thank you in advance for your help! Best regards, Niklas von Hirschfeld