The Action Viewer lists the loaded actions in the current simulator instance, and shows details about them on the right.  For more information about Actions, see the script guide.

Each action can have multiple parents, the parents are listed in the Parent Name(s) box.  Their types are listed in the next box.  Command is the simulator command the action uses, and parameters are the command's parameters.

The Delete button deletes the selected action.  Run Action runs the selected action.