PREVUE : Modify text in plots

PREVUE   Option Code Arg   Def
  1 input plot file extension ort   generated by ORTEP ort
      abs   generated by ABSORB  
      nwm   generated by NEWMAN  
      con   generated by CONTRS  
      gip   generated by GIP  
      ppp   generated by POWGEN  
  2 use pre xtal3.6 plot (.abs etc) files old