Introduction to bash scripting

Hello, I am a bit confused. In the CIDR.sh script there is a line that reads:

cidr_ips=$(prips $cidr)
no idea what this prips. Is that a typpo?

The prips tool can be used to print all of the IP addresses in a given range.
https://manpages.ubuntu.com/manpages/focal/man1/prips.1.html