180613
  connectseg,connectseg3 changed ( for null data )
  output3h debugged  (case where din1[0][0]==1)
180609
  crv3onsfparadata debugged ( case where curve has multi parts)
  connectseg3 added
180601
  wireparadata changed (for cmdflg=1)
  sfcutparadata changed ( for cmdflg=1)
180531
  outputend added
  output3,output3h changed
  readoutdata3 changed  ( varname added )
  intersectcrvsf changed (ws added)
180530
  readoutdata3 added ( hidden data not included )
180523
  crvsfparadata debugged (npar removed)
