https://www.w3.org/standards/history/content-editable/
The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web...
publication historycontenteditablestandards
https://web.dev/blog/contenteditable-plaintext-only-baseline?authuser=4
The contenteditable "plaintext-only" attribute value combination is now Baseline Newly available. Making an element contenteditable but plaintext-only has...
contenteditableplaintextattributevaluecombination
https://www.w3schools.com/tags/att_contenteditable.asp
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
html contenteditableattribute