Big eye
From DPWiki
Jargon Guides
The Big Eye (a.k.a. "Show All Text") button gets its name from the icon in the Enhanced proofing interface: The same functionality is available in the Standard proofing interface through the button labeled "Show All Text."
Clicking this button opens up a new browser window and displays the proofread text as it would appear on an HTML-formatted page. You see italics, bold, etc.
Its usefulness for verifying mark-up during formatting rounds can be priceless. But, it can also help when you're proofreading because you will see the text in a different font and slightly different format. Sometimes that's all it takes for a sneaky scanno to suddenly jump off the page at you!