Could somebody please take pity on me and explain how to get
started with periodic supping of sources?  I grabbed the source
tarballs and exploded them, built sup, and am cautiously trying
to get started with nightly updates using the sup file example
given in README.sup

However, "sup -vkf" always tells me it's gonna go grab *everything*.
How do I get it to pay attention to the fact that I already *have*
a fairly recent copy of the sources and just want the new stuff?

Do I need to fake it out with a "when" file?  Is some other trick
involved?  Did I just not read the man page carefully enough?
Clues requeted, by the dozen!

Thanks.

Terry R. Friedrichsen

terry@venus.sunquest.com