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          Financial Functions available in Professional Edition only
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 Returns the interest payment for a given period of an annuity based on
 periodic, constant payments and a constant interest rate. Requires
 FINANCE.QLB (FINANCE.LIB when compiling); include FINANCE.BI.
 
    IPmt# (rate#, per#, nper#, pv#, fv#, type%, status%)
 
    ■ rate#      Interest rate per period (for example, .12)
 
    ■ per#       Payment period; must be in the range from 1 to nper#
 
    ■ nper#      Number of payment periods in the annuity
 
    ■ pv#        Present value
 
    ■ fv#        Future value
 
    ■ type%      Integer expression:
                 0 = end-of-period payment
                 1 = beginning-of-period payment
 
    ■ status%    Variable that indicates calculation success or failure:
                 0 = success
                 1 = failure
 
 See Also
    ◄Financial Function Summary►   ◄$INCLUDE Metacommand►   ◄Quick Libraries►