Export As Menu Icon

[josephp99467712]

Hi all,

I'm exporting an image and trying to understand what this icon does. I tried researching and couldn't find information about it in the official user guide nor a Google search. It seems to make a border around the image preview, but I can't discern what that means.

Image below. I appreciate any help!

[Jeff Arola]

Explanation here:

https://www.danrodney.com/blog/icon-at-the-bottom-of-the-photoshop-export-as-dialog/