Blink supports plaintext-only editing mode by contenteditable=plaintext-only and -webkit-user-modify:read-write-plaintext-only. This is a non-standard feature inherited from WebKit. An element with plaintext-only editing silently changes white-space CSS property: normal to pre-wrap, nowrap to pre, pre-line to pre-wrap, in order to insert \n by typing Enter key instead of <br>, and insert a space character by typing a space key instead of