Satyajit Da, The room is the filter we use to avoid whiplashes in reversals... now how much room do we give!!!
It is predecided for each script or nifty... we use 15 points for Nifty , 20 points for aban, and 1 or 2 for other stocks like JP, hdil litl etc....
The value of room is totally derived from the back data of the script in question!!! (May be upto an year or more), the more volatile the stock the bigger the room, as we are giving 20 points in aban where as only 15 in Nifty!!! We analyse the back history and derive the 'optimum' room size which should not be small to loose its significance or big to reduce our profits unnneccesarily!!! Saint was very kind to have done this hard work also for us.
Trust I am almost correct!!!
Regards
R K Karnani