This is a common parameter in pipeline commands, allowing the user to specify which type of signal should be evaluated as input. Signal type is the top level of the data tree hierarchy.

The parameter will appear in commands as /Signal_Types or /SIGNAL_TYPES.

For example:

• EVENT_LABEL
• ANALOG
• TARGET
• PARAMETERS
• FORCE
• COFP
• FREEMOMENT
• METRIC
• KINETIC_KINEMATIC
• LINK_MODEL_BASED
• DERIVED
• P2D