Here comes a proof tree: \begin{prooftree} \AXC{$1 + 2$} \AXC{$1 + 2 + 3$} \BIC{$1 + 2$} \AXC{$1 + 2 + 3$} \RightLabel{Label} \BIC{$1 + 2 + 3 + 4$} \end{prooftree}
# Integration with Marp is easy!
Here comes a proof tree:
\begin{prooftree}
\AXC{$1 + 2$}
\AXC{$1 + 2 + 3$}
\BIC{$1 + 2$}
\AXC{$1 + 2 + 3$}
\RightLabel{Label}
\BIC{$1 + 2 + 3 + 4$}
\end{prooftree}
<script type="module">
import { renderProofTreesOnLoad } from "https://sano-jin.github.io/bussproofs-html/assets/prooftree.js";
renderProofTreesOnLoad();
</script>