longish Local Variables in Files

[Dan Jacobson]

In Info:
   Here is an example of a local variables list:

     ;;; Local Variables: ***
     ;;; mode:lisp ***...

Yes, right. But what about when you want to use a longish one and
want to break the line? Can you believe that me, Daniel Jacobson, 43
years old, had to use e.g.,:

# Local Variables:
# compile-command: "invoke-rc.d chrony restart && sleep 2 && : '
#' && grep chrony /var/log/syslog|tail -19"
# End:

Which is OK with me, but I wish you would document what to do in this situation.
(Yes I want all #'s.)