[CentOS] logrotate.d - reload vs restart

Looking at some of the stuff in /etc/logrotate.d, I see entries like this in some of the configuration files:

postrotate /sbin/service privoxy reload 2> /dev/null || true

From the commandline, that doesn't work:

# /sbin/service privoxy reload 2> /dev/null || true Usage: /etc/init.d/privoxy {start|stop|restart}

Changing reload to restart does work:

]# /sbin/service privoxy restart 2> /dev/null || true Stopping Privoxy, OK. Starting Privoxy, OK.

I find "reload" in the httpd logrotate file as well:

postrotate /sbin/service httpd reload > /dev/null 2>/dev/null || true

What am I failing to understand?