// node 2 and node 5 should be at the same level

SameLevelConstraint {
  firstNode: node2
  secondNode: node5
}

// node 5 should be at a lower level than node 9, with priority 50

RelativeLevelConstraint {
  lowerSubject: { node5 }
  higherSubject: { node9 }
  priority: 50.0
}

// node 10 should be at a lower level than node 9, with priority 50

RelativeLevelConstraint {
  lowerSubject: { node10 }
  higherSubject: { node9 }
  priority: 50.0
}

// node 11 and 12 should be at level range 3-4

LevelRangeConstraint {
  subject: { node11, node12 }
  minLevel: 3
  maxLevel: 4
}

// node 13, 14 and 15 should be in a group at maximum 2 levels

GroupSpreadConstraint {
  group: { node13, node14, node15 }
  spreadSize: 1
}

// node 11, 13 and 3 should be at the same level. As an alternative to
// the same-level constraint, there is the group-spread
// constraint.

GroupSpreadConstraint {
  group: { node3, node11, node13 }
  spreadSize: 0
}

// node 16 should be at the highest level

ExtremityConstraint {
  node: node16
  side: SOUTH
}

// node 11 should be close to node 3

SideBySideConstraint {
  group: { node3, node11 }
  priority: 100.0
}

// node 2 should be to the right of node 5

RelativePositionConstraint {
  lowerSubject: { node5 }
  higherSubject: { node2 }
  priority: 50.0
}