On the Summary tab, as with any field whose value is too long for its column width, if the JVM Arguments value shown at the bottom of the upper panel is extensive and runs beyond its column, you can mouse over the value to display a yellow pop-up box that shows all the JVM arguments. When you mouse away from it, the yellow box disappears. However, if you double click the JVM arguments value, a pop-up box displays and remains until you close it:

138 Using Visualizer Functions