The Brackets RTX Extension is designed to clearly box and identify the price action within each time-based period (bracket) with options to label, color, and extend the brackets horizontally and vertically. The term Bracket comes from the 30-minute periods typically used in a TPO Charts, most commonly with A represeting the first 30 minutes of the session, B representing the 2nd 30 minute period, and so forth. The time per bracket defaults to 30 minutes but may be set to any number of minutes.