Keys of a custom property array

[Richard Gaskin]

Monte Goulding wrote:

 > It's documented as a keyword not a function.

"Keyword" is the "Miscellaneous" of programming languages, the box 
things wind up in when they don't fit into a language's equivalent of 
The Seven Parts of Speech. ;)

-- 
  Richard Gaskin
  Fourth World Systems
  Software Design and Development for Desktop, Mobile, and Web
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