What is explainshell used for / should it be recommended to install as a dependency in the Readme?

[JR]

For now, explainshell is mentioned in passing in the readme, and it is not clear how important / useful it is to have it installed.

I guess explainshell is to provide documentation / explanations somehow either at hoover or when asking for help about elements? Is it also strongly recommended or not / should I also mention it in the dependencies section? Or is the functionality provided by explainshell already well covered by the package per se?

If this can be explained here, I can summarize the discussion in a short README extension PR :) .