What does roslaunch do while loading yaml config files? [closed]

edit

I am slightly new to ROS. From what I understand it loads the entries of the file as rosparams onto the parameter server.

So if my launch file contains the following line: <rosparam file="$(find my_navigation)/config/base_local_planner_params.yaml" command="load" />

And the yaml config file contains: TrajectoryPlannerROS: max_vel_x: 0.1 min_vel_x: 0.05

Is it equivalent to entering the following in the launch file: <param name="TrajectoryPlannerROS/max_vel_x" value="0.1"/> <param name="TrajectoryPlannerROS/min_vel_x" value="0.05"/>