Using Custom Icons in SilverStripe CMS Menu and Elemental Blocks
By default, SilverStripe CMS uses Font Icons for menu, and at times, you would want to set your own custom SVG icons when there isn’t a sufficient icon and/or to be inline with your org brand guidelines. This article explains how can set those, in both cases — For use in CMS classes that extend ModelAdmin, and in the case of Elemental Blocks that extend BaseElement.