about the meaning of frBlockObjectEnum

[gilgamsh]

in src/frBaseTypes.h , there is a enum class called frBlockObjectEnum, and it has lots of types. I want to know the prefix meanings. Such as frc,drc,tac,gcc

[maliberty]

The c is for constant. fr = base types, dr = detailed router, ta = track assignment, gc = drc (these correspond to the subdirs of src/).

[gilgamsh]

Thank you very much