Adding lines to /etc/rc ??

[Alex Schenkman <alex_(_at_)_melody_(_dot_)_se>]

Hi,

What is the "standard" way of adding a service to boot automatically ?

I want to run heimdal instead of kth-krb.
I can add some lines to /etc/rc, and a new variable to /etc/rc.conf,
Or just replace to invocation of kth-krb by heimdal...

But I wonder if there is a standard way of doing this, rather than manually
modifying the scripts.

Thanks