String current=thetextboxplx.AsTextBox.Text;
if (game.debug_mode==1)
{
if (current!=null)
{
  File *output
  if (!File.Exists("log.txt"))
    {
      output = File.Open("log.txt", eFileWrite);
    }
  else
    {
      output = File.Open("log.txt", eFileAppend);
    }
output.WriteRawLine(String.Format("[%s",current));
output.Close();

}
}

}