Reference zone

This is an optional zone attribute, which may store the index of the reference zone. The current zone can be anchored to one, two or four other zones through references. See Create reference between two or more zones for detailed instructions.

  • One reference zone: the current zone is anchored to the specified reference zone.
  • Two reference zones: one for horizontal and one for vertical alignment.
  • Four reference zones: left, top, right and bottom edges of the zone are aligned independently.