040000 tree f426228489da4e3096358153107a1e46e786563a	s4-base
040000 tree d27585f7a518071a8abb53aa2e7e3839df822860	s4-comm
040000 tree d147dca7bb474f088bd0872fba6e2c4e46a22823	s4-core
040000 tree 07d29bc448fa07bbed5f2e8e9a767cdfd3e9734b	s4-edsl
040000 tree cd94114ae565c13df8fc0e865b76114cacc995dd	s4-example
040000 tree f2280812afc3a8647417dad1613b5328cb994605	s4-tools