owl:imports and xml namespace!

Hi,
I don't understand why in owl:imports you didn't put an attribute to set up a shorthand notation for names of the elements imported.
There is a redundancy between the namespace declarations and owl:imports statements like in DAML.... why you didn't add an attribute like in SHOE to specify the prefix of the elements? Is there a motivation that giustify the redundancy?
Thank you in advance for you answers, 
Davide.
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      Davide Noaro 
      noarodavide@libero.it
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