This TradeStation indicator automatically plots the high and low of the opening range, and gives you an alert when price breaks out of this range. It can also display possible price targets, which are the high of the range plus the range distance, and the low of the range minus the range distance.
When used with RadarScreen, it will show which symbols are breaking out of the opening range for the first time today. You can either search for real-time breakouts or confirmed breakouts from one bar ago. The indicator can also be customized to change the opening time and how long the opening range lasts.