substack: "<svg title=\"substack icon\" id=\"substack_icon\" aria-hidden=\"true\" xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 22.5 27.06\"><path d=\"M0,0h22.5v2.91H0V0Z\"/><path d=\"M0,5.81h22.5v2.91H0v-2.91Z\"/><path d=\"M0,11.63v15.43l11.25-7.44,11.25,7.44v-15.43s-22.5,0-22.5,0Z\"/></svg>" = ...