a Popover is a small overlay of content that is used to display secondary information of any element when it is clicked by a user.
By Using Right Click (Ctrl+Click) on aWidget, you can Add, Modify or remove a Popover linked to a Widget.
You have the choice between 3 options : none, simple and button list:
Framework7 Reference: https://framework7.io/docs/popover.html
Bootstrap Reference: https://getbootstrap.com/docs/4.0/components/popovers/