When a button is hovered over by the mouse pointer, its navigation icon is displayed, along with its display icon (light bulb), edit icon, and delete icon. If the mouse pointer is moved off of a button, the details disappear and the button returns to its normal state within the Design Canvas’s navigation section.
When the Show Detail Action button is pressed, all buttons on the page display their details. This makes it simple to see the navigation icons without having to hover over each individual button. In addition, the Level 1 Tabs also display their edit icons. Click on the Show Detail button a second time to return the navigation display back to its normal state.