Cascaded Intervals

Key _Cascaded Intervals in Composite Payoff refers to the read-only 1D-array of real intervals S₁ , S₂ , ... Sᵥ, as described in Composite Payoff
These are the regimes of the payoffs P'₁ , P'₂ , ... , P'ᵥ displayed in key _Cascaded Payoffs

Note this key is prefixed by _, which indicates it is regarded as a read-only part of the object's data and therefore its associated value cannot be edited.
For that reason it does not appear as part of the input data.
It carries informational only value for the user and appears as part of its contents.
Also it completely depends on the remaining object contents and therefore is never part of the exported object's data.