Interesting that on a linux machine man syscalls \ | grep -Po '\w+(?=\(2\))' \ | sort \ | uniq \ | wc -l gives the same number of 481 as the number

Interesting that on a linux machine man syscalls \ | grep -Po '\w+(?=\(2\))' \ | sort \ | uniq \ | wc -l gives the same number of 481 as the number of rows in that table. Though, the grep includes man-pages that don't correspond with a syscall, like intro(2). It's just a curious coincidence.