Internal Program Version: CUPS  2.4.19 (The man files)

CUPS is a modular printing system which allows a computer to act as a
print server. A computer running CUPS is a host that can accept print
jobs from client computers, process them, and send them to the
appropriate printer.

This package contains the traditional command line interfaces for the
System V and Berkeley print systems.

https://openprinting.github.io/cups