PATTERN option in FUSION 360 (Belt GT2)

Hi everyone! Thank you for viewing the 3d modeling lessons in Fusion 360 CAD and leaving the Comentaria. By listening to your requests, I continue to prepare them.
In this video, consider the Pattern option. If you explain with your words Pattern is used to propagate elements when you build a model.
Taking lessons on 3d modeling is best to show anything on a specific task. Here, we model the part for the printer assembly 3d, it will be the belt retainer gt2 for the carriage Y.