structured warrant

sakindo

新加坡 sgx 里有很多 warrant ， 请问有call 和 put 吗？如何分别？如何计算？

好像
HSI 12000 BNP ECW090429

Last Date/ Time to submit Subscription Notice	29 APR 2009 06:30 PM ( Singapore time)
Listing Date	12 MAR 2009
Expiry Date	29 APR 2009
Outstanding Balance	20,000,000
Price ($) as at 2009-04-21	1.290
High for the year ($)	1.550
Low for the year ($)	0.370
High for the month ($)	1.550
Low for the month ($)	0.745
Exercise Price	SGD 0.00000
Underlying Stock
Underlying Stock Price ($) as at 2009-04-21	0.000
Conversion Ratio	0 share(s) : 0 warrant(s)
Cash ($)	0.000
Premium/(Discount) (%) (Cash)
Premium/(Discount) (%) (Bonds)
Gearing (x)
Remarks	Underlying: Hang Seng Index

知道29号expired 会变废纸，不知道计算。 谢谢！