[Mastering Mobile manipulation] I could not understand what is this meaning

I have copied the file "rbkairos_ur5_egh.urdf.xacro"
Refer to the instruction, do I need to change for the original file?

Hello @hki,

No, you don’t need to do any modification to the rbkairos_ur5_egh.urdf.xacro file. In the instructions, it’s just telling you to copy it to your catkin_ws so that it is easier to find for you. This file is the one you are going to load into the MoveIt Setup Assistant to create your MoveIt package.