SDD Specifications Document

Mike Dallwitz md at ENTO.CSIRO.AU
Wed Mar 8 12:18:42 CET 2000

> From: Kevin Thiele <kevin.thiele at PI.CSIRO.AU>

>> From: Leigh Dodds <ldodds at INGENTA.COM>

>> Is it reasonable to include character dependencies 'upwards'?

> There may be a problem if you mix and match "up" and "down" dependency
> definitions. The thing is to choose the one that will be most easily
> defined.

Both forms are necessary for efficient internal use in programs. It's also
convenient to have both forms available in the user interface of a data
editor (our DELTA Editor does this). However, one form is enough for a
data-exchange format - to have both (especially both together in the same
data set) would make reading and checking the data more difficult.


Mike Dallwitz

CSIRO Entomology, GPO Box 1700, Canberra ACT 2601, Australia
Phone: +61 2 6246 4075   Fax: +61 2 6246 4000
Email: md at  Internet:

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