PARAMETER

A parameter is a constant value which can be used throughout the script as a parameter of the commands. Instead of writing the value directly into the script, you first define the value as a parameter and then use this parameter name to reference the value.

With this concept, you can change values, which you use at multiple locations within the script, by just updating the parameter and this change will be populated to all commands where you are using the parameter.

 PARAMETER Name
value