Author:  Mikhail Bulychev

Function:
      Portfolio displays spreads between futures contracts and base asset

How to use:

     rows:

	tmp=set_value(tmp, "base_class_code", "EQBR")
	tmp=set_value(tmp, "base_sec_code", "EESR")
	tmp=set_value(tmp, "class_code", "SPBFUT")
	tmp=set_value(tmp, "sec_code", "ESU5")
	coll=INSERT_COLLECTION_ITEM(coll,0,tmp)

      set correspondence between futures contracts and base asset.      
