Of course, I had tried nodeeditor1.1, but its update time is 2020/09/14.
Elephant has been released on Mar.2, 2021 (refer to https://github.com/nkallen/elephant/releases/tag/v0.1-alpha).
And there are special instruction pages on https://moiscript.weebly.com/biblio-elephant.html.
But is Elephant old?