Data Source Filter
------------------ 
  Data source filter determines the source of your custom scan. You may either choose to scan 
  from a list which the system provides(Previously Scanned Data) or could provide your own list
  of stock tickers.
  Right now the number of tickers which you can  provide is limited to 5. 
  If you select system list and also enter your own tickers, system will scan the system list
  for user entered ticker.