public void reset(String latex){
  parseString=new StringBuffer(latex);
  len=parseString.length();
  formula.root=null;
  pos=0;
  spos=0;
  line=0;
  col=0;
  group=0;
  insertion=false;
  atIsLetter=0;
  arrayMode=false;
  ignoreWhiteSpace=true;
  firstpass();
}

public void reset ( String latex ) { parseString = new StringBuffer ( latex ) ; len = parseString . length ( ) ; formula . root = null ; pos = 0 ; spos = 0 ; line = 0 ; col = 0 ; group = 0 ; insertion = false ; atIsLetter = 0 ; arrayMode = false ; ignoreWhiteSpace = true ; firstpass ( ) ; }
reset the parser with a new latex expression
