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Sue P. Stewart suggests:
>"The program's purpose" = "the program purpose."
>"The key's function" = "the key function" (or "the key does or causes")
The only uses I can think of at 8:03 am for these phrases are in this context:
The program's purpose is blah (the program purpose is)
The key's function is blah (the key function is)
in which case, I'd rather write:
The program blahs
The key blahs
(where blah suddenly, as if by magick, becomes a verb). In other words,
I'm suspicious of "purpose" and "function" -- often, they add no meaning.
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