Go ahead and glance over the man page for less, which is an enhanced pager.
"Debian GNU/Linux: Guide to Installation and Usage"
John Goerzen and Ossama Othman
This time, man should have invoked the less pager.
"Debian GNU/Linux: Guide to Installation and Usage"
John Goerzen and Ossama Othman
Even these simple jobs actually consist of multiple processes, including the man process and the pager more, which handles scrolling one page at a time.
"Debian GNU/Linux: Guide to Installation and Usage"
John Goerzen and Ossama Othman