#157: Clarification to Section 2.3 - Naming Conventions
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  Reporter:  ros             |      Owner:  cf-conventions@…
      Type:  defect          |     Status:  new
  Priority:  medium          |  Milestone:
 Component:  cf-conventions  |    Version:
Resolution:                  |   Keywords:
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Comment (by davidhassell):

 Hello,

 Starting an attribute with a [0-9] (e.g. `133Xe_concentration`) is a
 different case to starting it with an underscore (e.g. `_myAttribute`),
 because of the netCDF "system use" rule. I think that I'm in favour of
 disallowing leading underscores, because of the potential conflicts
 between the netCDF and CF namespaces. Could we allow:

   Variable, dimension and attribute names '''must''' begin with a letter
 '''or digit''' ...

 Are there many existing dataset which use leading underscores?

 David

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Ticket URL: <http://cf-trac.llnl.gov/trac/ticket/157#comment:2>
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