What does ssb-subcarrierOffset means in MIB?

Hello Experts.

What does ssb-subcarrierOffset means in MIB?

Is it the frequency offset difference between lowest subcarrier of SSB and CRB ?

So let’s say if Ssb-subcarrier offset is 0 does it means SSB starts exactly from 0th RB is frequency domain?

If the Kssb=0, the Subcarrier 0 of the SSB is at the SC0 of the CRB which is overlapping with the SSB.