Who or what start polkitd in Slackware?

On Linux "who" start daemons? Suse, RockyLinux, Debian use systemd Devuan use scripts in /etc/rc*.d/* which are symlinks from /etc/init.d Slackware: use scripts in /etc/rc.d/rc.* (for example rc.M start a lot of daemons, rc.sshd start sshd, etc..) On my Slackware I see polkitd start at the boot. But who or what start it? ps -ef|grep pol polkitd 2210 1 0 set04 ? 00:00:00 /usr/lib/polkit-1/polkitd --no-debug polkit is not defined in any script grep -irl polkit /etc/rc.d/ grep -irl polkit /etc/init.d