Opening Range Breakout (9:30 - 9:45 EST)

Here's a Pine Script (v5) for TradingView that plots the Opening Range Breakout (ORB) lines from 9:30 AM to 9:45 AM EST on a 15-minute chart.
It draws a green line at the high of the opening range and a red line at the low, both extending through the rest of the day.