Re: [xtm-wg] Version number in URI.

["Steven R. Newcomb" <srn@coolheads.com>]

[Murray Altheim:]

> The version number is essential if we expect there to be future alterations
> to XTM that include new features. This will allow processors to know that 
> "xtm/1.0" namespace-compatible processors and topic maps are *different*
> from newer versions, e.g., they include templates or other new syntax.
> Absent versioning we mix all of the version's namespaces and are unable
> to differentiate, which I believe would be a serious interoperability
> mistake.

What Murray said.  I want to say it this way:

  It's important that a topic map processor be able to tell whether
  it's qualified to process a topic map.  If the topic map invokes a
  version of XTM that has a higher version than the processor was
  designed for, it should disqualify itself, or at least warn the user
  that the result of processing should not be trusted.

-Steve

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Steven R. Newcomb, Consultant
srn@coolheads.com

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