These is also some documentation on this somewhere. Did you check the YouTube video from @mshalan?

@jeffdi I see below native value in mgmt_core_wrapper ./mgmt_core_wrapper/config.tcl set ::env(FP_HORIZONTAL_HALO) -6 set ::env(FP_VERTICAL_HALO) 25 But I don't see this setting helping in pdn. As per my understanding you will notice this only with latest openlane (post mpw-6c docker). For each MPW, Is caravel macros are always re harden with latest openlane tool set?