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In the Repeating group dialog, you can create a Repeating unit, an SRU polymer, or a Link node. It is also possible to change the repeat pattern and the label of these substructural groups.

Repeating Group Dialog

Repeat pattern values

  • (ht) - head-to-tail (not displayed on the canvas)
  • hh - head-to-head
  • eu - either/unknown

Label values

  • number (e.g. 3)
  • range (e.g. 5-8)
  • lowercase letters (a-z except:c and f

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