Legend for series of different securities

Security Series  
Rolling Settlement Trade for Trade
Fully paid equity shares/ETF's EQ * BT  
Partly paid equity shares E@ X@ @ = 1-9, A-Z
 
Units of mutual funds (close ended) MF** -  
Non convertible preference shares P@ O@ @ = 1-9, A-Z
Fully convertible preference shares Q@ F@
Non convertible debt instruments N@ /Y@ U@ /M@ except MF/ME,
@ = 1-9, A-Z
Fully convertible debt instruments D@ S@ @ = 1-9, A-Z
(except DR, DE, DL, DT)
Convertible warrants W@ K@ @ = 1-9, A-Z
Indian Depository Receipts (IDRs) DR DE  

* EQ = Presently rolling settlement (was account period settlement before July 2, 2001)
BE = Rolling settlement before July 2, 2001. The same is presently being used for the securities moved to Trade for Trade (Surveillance).
**=Units of mutual funds listed after December 11, 2008