# :FUNCtion Parameters Commands

Subsystem Command Groups

- :FUNCtion Parameters Commands
- Math Function Parameters Commands
- Simulation Function Parameters Commands
- Signal Processing Function Parameters Commands
- Transform Function Parameters Commands
- User/Custom Function Parameters Commands

Use the `:FUNCtion:PARameters` commands to select specific operator attributes for a function operator.

The :FUNCtion:PARameters commands define the basic function. When you click on your function in the Functions dialog box, a setup dialog opens that allows you to configure your function. If a dialog does not appear, then there are no commands in the `:FUNCtion:PARameters` that apply to the operator. For additional commands, refer to the `:FUNCtion` subsystem.

Operators are identified by their function assignment number (1 through 64) which is included in the `FUNCtion{1:64}:PARameters` command. The following figure shows a Gaussian operator assigned to Function 1. Commands in this subsystem allow you to select the Gaussian operator's filter cutoff frequency. Before configuring an operator, assign the operator to a function using the commands found in the `:FUNCtion` subsystem.

To create and configure a function:

1. Use the `:FUNCtion:FOPerator` command (:FUNCtion subsystem) to create the function.
2. Use the `:FUNCtion:PARameters` commands to configure your function.