190124
  readoutdata3 changed (tmp,strtmp)
190123
  Use of sprintf
181105
  output3h debugged  ( ctr=0 added in varh )
  readoutdata3 debugged  (//,etc )
181104
   line display(123) for debugging removed
181025
   crv3onsfparadata debugged  (case of out=NULL )
181023
   pthiddenQ changed  ( int flg, double out[4] )
180705
 nohiddenparadata2 debugged  (|sp-sq}>1)
180703
 nohiddenparadata2 debugged  (for closed curve)
180616
 nohiddenparadata2 debugged  (rewritten a part )
 output3h debugged  (case where din1[0][0]==1)
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)