I was asked this question following on from our Online Worldwide Developer Conference last week. (You can still register and view the recorded presentations via the easy to remember URL
https://4js.com/wwdc/ or
https://4js.wwdc20online.virtualconference.com/)
The question related to the Circular or Rounded images I demonstrated as part of my presentation on Genero Browser Client customisation and which I’d covered in a previous Ask Reuben article
https://4js.com/ask-reuben/ig-45/ . I was asked how to make the images circular in a ListView, a ListView being something I talked about in a recent Ask Reuben article
https://4js.com/ask-reuben/ig-54/ as well. These images not being something you use an IMAGE widget for, but are handled by the IMAGECOLUMN attribute.
The key knowledge point from my presentation
https://4js.wwdc20online.virtualconference.com/#/conference/5f4ca34fd335b8001b005c5d that helps here is what was on slide 49 at around the 51m:56s mark, and that was to use the Developer Tools or equivalent feature on your browser to look at the generated .html / .css and determine the appropriate selectors.
To read more, click on
https://4js.com/ask-reuben/ig-57/