The point here is that delete should delete, rather than just being a shorthand for 
"put empty into" in  some situations.

As far as consistency goes, Jacqueline is at least partially correct.  Consider delete 
with a variable:

global largeData 
globalNames() -> list will not include largeData

put 1 into largeData
globalNames() -> list will include largeData

delete largeData
globalNames() -> list will still include largeData

But this is hardly consistent with other delete operations:

delete field 1
delete file <filespec>

-- 
--
Rodney Tamblyn
Educational Media group
Higher Education Development Centre, 75 Union Place
University of Otago, PO Box 56, Dunedin, New Zealand
ph +64 3 479 7580 Fax +64 3 479 8362
http://hedc.otago.ac.nz ~ http://rodney.weblogs.com

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