[m-dev.] Suggested small change to map.m

[Ralph Becket]

Func map__keys just calls tree234__keys which returns the key list in
sorted order and as such is a very useful feature.  However, this isn't 
in the documentation.  I propose that the documentation be changed so 
that users can rely upon this property.  Either that or add 
map__sorted_keys.

Ralph

--
Ralph Becket      |      MSR Cambridge      |      rbeck at microsoft.com 
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