11-25-2009
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Join Date: Dec 2008
Last Activity: 28 March 2014, 8:35 AM EDT
Location: Vienna, Austria, Earth
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They can (in theory) both safely be deleted, but that will mean that you can't start/stop your HTTP server anymore.
There are (usually) two links to any service script in rc.3 (what's the full path? /etc/rc.d/rc.3? /etc/init.d/rc.3? Just curious), one for starting, one for stopping. Those beginning with 'S' are run when the system enters that runlevel, in numerical and alphabetical order, so S94httpd is started after (exemplary) S93mysql but before S94imapd.
Similarly, scripts starting with K are stopped ("killed") as the system leaves that runlevel.