Here's a simple multi-select tree widget cobbled up from *visibility* and
*option* widgets.

https://lifeofpenguin.blogspot.com/2022/04/multi-select-tree-widget.html

On Tue, Mar 22, 2022 at 5:41 PM Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Anand Tamariya <atamariya@gmail.com>
> > Date: Tue, 22 Mar 2022 10:56:21 +0530
> >
> > What's the recommended widget/ interface to use for selecting multiple
> options from a tree of options (cf.
> > attached image)?
>
> tree-widget.el?
>