OrderedGroup node

OrderedGroup {
  MFNode children NULL
  MFFloat order
}

Identical to Group but the drawing order can be changed using the order field.
Each node of children must have a corresponding float value in order and the node that has the smallest value is drawn first.

MFNode children NULL :
List of children to group

MFFloat order :
Float values for each node of the children field. The smallest value is drawn first (the most in background)

#VRML V2.0 utf8
OrderedGroup {
    order [ 2 1 ]
    children [
        Shape { # position 2
            appearance DEF APPEARANCE Appearance {
                material Material2D { emissiveColor 1 0.4 0 }
            }
            geometry Rectangle { size 50 50 }
        }
        Shape { # position 1
            appearance USE APPEARANCE
            geometry Circle { radius 25 }
        }
    ]
}