'Label' flags

[Cyrus Daboo]

I've seen 'in the wild' keywords such as $Label1, $Label2 etc Since I'm in 
the process of adding keyword support and want to have a fixed set of 
'labels' that a user can define I'm interested in knowing whether this is 
something that should be 'standardised' behaviour to promote interop 
between clients.

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Cyrus Daboo