> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Parameter Sets

* Specific values defined in SIMM are shipped with Atoti ISDA-SIMM in sets labelled "1d" and "10d".
* Additional sets of parameter values can be added in a customer project.

You can analyze calculations under different parameter values side by side using the "[Parameter Set](../cube/dimensions/parameter-set)" hierarchy.

* You can override parameter set values in a WhatIf experiment and analyze the impact of parameter changes on the margin. To compare "master" and experimental calculations, use the [Epoch](../cube/dimensions/epoch) hierarchy.

The "Parameter Sets" widget under the WhatIf Simulations category can be used to display base and experimental parameter values. For the sets having a parent, you may need to enable "Lineage" to view the overrides together with the base values.

* You can upload a parameter set in a file via File Upload Widget in a WhatIf experiment. To compare "master" and experimental calculations, use the [Epoch](../cube/dimensions/epoch) hierarchy.