For a project I needed a snippet which presents arbitrary HTML code in a tooltip like popup window, when the mouse hovers over an HTML ELement. I couldn't find one solving my complete problem, but on https://www.w3schools.com/howto/howto_js_popup.asp I found a suitable template to build on.

OpenVPN supports certificates generated by easy-rsa. This script creates client configuration files using the inline format with easyrsa3

• Original Script written by Eric Jodoin
• Update by Eric Maasdorp 2017-12-16
• as found in https://gist.github.com/jachermocilla/c1b895fdc7c948dcee8bec6c96455d65
• Update for easyrsa3 by Holger Smolinski 2020-04-16