Python Scripting issue

Hi all.
I am a new learner from Unity3D engine and I would like to do some work in Isaac Sim.
I’ve just found how to add the scripts to objects as follow but still don’t know how it works.


Since I am more familiar with Unity, I wonder if there is any running logics related to Unity’s functions like Start, Update and so on.
Or say, is there any document I can follow?

checkout the Isaac core api, you can either start with the tutorials: 1. Hello World — isaacsim latest documentation

or read the api doc