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• Each non-blank value in the column is represented by one of the displayed patterns. Patterns are specified as a combination of literal values and and 

  d-s-itemlang
  item patterns r true

  . For more information on these patterns, see Text Matching.
• Patterns might be more generalized than the constraints of the column's data type.
• Token values are

  d-s-itemlang
  item patterns

  without  without braces.

Column Details panel - Patterns tab

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In the above example, all values that have been identified as matching the url

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