Question about "only" RULE lines

[David Keegel]

On Wed, Dec 27, 2006 at 01:43:52PM -0000, David Braverman wrote:
> > it's the last ... rule in effect, which is 1919 Oct 
> > lastSun at 2:00, i.e., standard time.
> 
> Thank you. That part wasn't clear from the docs.
> 

I think the fundamental thing to understand about rules in tzdata
files is:

    The "Rules" purpose is to specify *transitions* at points in time.

The Rules primary purpose is *not* to specify what offset and
abbreviation apply for a given zone at a particular time.
However, you can easily work this out once you use the rules
to determine what was the previous transition before the
particular time.

Is this documented in zic(8)?

___________________________________________________________________________
 David Keegel <djk at cybersource.com.au>  http://www.cyber.com.au/users/djk/
 Cybersource P/L: Linux/Unix Systems Administration Consulting/Contracting