GE EPM 7300 Installation Manual page 22

Data Dialog box has an extra field for indicating when the RRTD option is installed.
Be sure to select the correct RRTD option when completing the 369's Tabular Data
Dialog window. If you are not planning to use an RRTD module with your relay,
select the "No" button. This minimizes the number of I/O tags created by the wizard,
providing better performance.
14 PMCS Interface Toolkit