What are the three types of input parameters used in the scripts?

Input parameters are used to pass values from the analysis to the script. They can be of three types: page or data table in the current analysis, action control, or data type. Page or data table in the current analysis allows the script to access a specific page or data table by name. Action control allows the script to be triggered by a user action, such as clicking a button or selecting a value from a list. Data type allows the script to accept a value of a specific data type, such as text string, integer, date, etc. Visualization is not a type of input parameter, but rather an object that can be accessed by the script using the Document.ActivePageReference.Visuals property. References: Spotfire Analyst Scripting, How to Get Values of the Input Parameters of a Data Function in TIBCO Spotfire® Using IronPython Scripting