TYPO3 Core

With
config.message_preview_workspace
you can define an custom preview-message.

But there you can only insert Workspace title and Number. If you do not touch it, you will get the stop-button too.

add

config.message_preview_workspace = <div id="typo3-previewInfo" style="position: absolute; top: 20px; right: 20px; border: 2px solid #000; padding: 5px 5px; background: #f00; font: 1em Verdana; color: #000; font-weight: bold; z-index: 10001">Displaying workspace named "%s" (number %s)!</div>

to your page-tsconfig.

(issue imported from #M11352)