Abandon prompt editable text

The ability to edit the text that appears in the Abandon prompt when trying to exit a page with unsaved data.

Hi Travers,

Sorry for the delay in getting a response to this one.

I think most browsers will not allow us to specify the text in the abandon prompt:
See https://html.spec.whatwg.org/multipage/browsing-the-web.html#unloading-documents

The message shown to the user is not customizable, but instead determined by the user agent. In particular, the actual value of the returnValue attribute is ignored.

This will be to protect the user.

We do have a System Label called “abandon_prompt” which you can set the value for. Our code does ask for this text to be displayed but I think the browser will ignore it.