Particles {
      exposedField SFVec3f bboxSize -1 -1 -1
      exposedField SFVec3f bboxCenter 0 0 0
      exposedField SFFloat lodRange 100
      exposedField SFBool enabled TRUE
      exposedField SFFloat particleRadius 0.1
      exposedField SFFloat particleRadiusVariation 0
      exposedField SFFloat particleRadiusRate 0
      exposedField SFNode geometry NULL
      exposedField SFVec3f emitterPosition 0 3 0
      exposedField SFFloat emitterRadius 0
      exposedField SFFloat emitterSpread 0.25
      exposedField SFVec3f emitVelocity 2.5 5 2.5
      exposedField SFFloat emitVelocityVariation 0.5
      exposedField SFRotation emitterOrientation 0 1 0 0
      exposedField SFFloat creationRate 500
      exposedField SFFloat creationRateVariation 0
      exposedField SFInt32 maxParticles 500
      exposedField SFTime maxLifeTime 5
      exposedField SFFloat maxLifeTimeVariation 0
      exposedField SFVec3f gravity  0 -9.8 0
      exposedField SFVec3f acceleration 0 0 0
      exposedField SFColor emitColor 1 1 1
      exposedField SFFloat emitColorVariation 0 # new in 5.0
      exposedField SFColor fadeColor 0.25 0.25 0.25
      exposedField SFFloat fadeAlpha 1.0
      exposedField SFFloat fadeRate  0.25
      exposedField SFInt32 numTrails 0
      exposedField SFInt32 numSparks 0
      exposedField SFVec3f sparkGravity 0 -5 0
      exposedField SFColor sparkFadeColor 0 0 0
  }