Robustness testing of SCRL OMP-2014 and development of a metarule to be used in Exceptional Circumstances

This document first conducts some robustness tests for SCRL OMP-2014 and then investigated a number of metarule candidates to be used in addition to the current OMP given Exceptional Circumstances. Metarule MR4 is recommended as the most appropriate option, although it is acknowledged that this metarule would apply for the relatively short term only, and that for 2025+ it would need to be improved to prevent possible unnecessary catch reductions