The Plansys2 Terminal module is a tool to directly monitor and edit your application. See the tutorial here.
The node is created inside a Terminal object, which starts a looping run_console() method reading the terminal input and calling the corresponding services and actions.
To enable for using parameters specified in a YAML file for e.g. specifying the timeout for the planner and planner client, you can use the following command:
ros2 run plansys2_terminal plansys2_terminal --ros-args --params-file `ros2 pkg prefix --share plansys2_bringup`/params/plansys2_params.yaml