Action Point Of Sale Code

package cell;
import frontend.*;
public abstract class DataForm extends Form
{
 public abstract CellBase init();
 public void preSetup()
 {
  c = init();
  }
 protected CellBase c;
 final CellBase sec(Object scan, byte col)
 {
  Object o = c.clone();
  CellBase s = (CellBase)o;
  for (short i = s.max(); i>=0; i--)
  if (!s.go(col, i).equals(c.go(col,i)))
  s.ramDelete(i);
  return s;
  }
 }