The searches can be customized with multiple options.
1) View exact search options.
2) View nearby stations combination upto a max of X (to be entered by the user) from the selected station.
3)...
more... Show trains/classes only having availability or RAC Status for the entered date.
4) From the past PNR records, the quota can be displayed when a station combination is chosen.
Ex:- When I choose to see status for Kolkata Rajdhani Express (via Patna)/12305 between MDP and NDLS
/pnr/post/194774From: Madhupur Junction/MDP
To: New Delhi/NDLS (RLGN)