The documentation at:
100 is the offset from the network address, in the default configuration this would mean start leasing addresses from 192.168.1.100
So, the default router ip is 192.168.1.1 so 100 offset would make 192.168.1.101 and I also see in my dhcp server status that the IP 100 is never assigned.
The same goes for the limit option, the 150 would end in 192.168.1.251 if it starts at .101.
Is this an error in the documentation?