Question about nodename in TF (IN ROS documentation, link attached)

In this tutorial, the node name they define is ‘turtle_tf_broadcaster’ but while launching the node in the launch file, they use ‘turtle1_tf_broadcaster’ and ‘turtle2_tf_broadcaster’? I understand that they are launching the node twice to launch with different parameters, but how did they change the node name?


It is changed in the launch file, with the name parameter.