Draft of text for Sources instructions.

[David Kristofferson]

>         That would work in principle, but BioSci.src is updated only once a
> week (on Monday morning).  Note also that Rob is acting here as a Computer
> Pioneer helping Working Biologists to use Polished Software.  I'm GLAD he does
> this!!!!

We can easily change the frequency of updating the BIOSCI source.
This was done under the assumption that sites would not expire bionet
messages immediately or discard from their e-mail recent messages of
obvious interest.  What update frequency would people like??

Dave