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Short helpfile for action TD_PRODUCT_COMBINATION
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The following arguments are compulsory: 

          DISTRIBUTIONS - The labels of the target distribution actions to be used in 
                          the product combination. 

In addition you may use the following options: 

          SHIFT_TO_ZERO - ( default=off ) Shift the minimum value of the target 
                          distribution to zero. This can for example be used to avoid negative 
                          values in the target distribution. If this option is active the 
                          distribution will be automatically normalized. 
    WELLTEMPERED_FACTOR - Broaden the target distribution such that it is taken as 
                          [p(s)]^(1/\f$\gamma\f$) where \f$\gamma\f$ is the well tempered factor given here. 


