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Thank you ! So with the grab the source on github control tab in the editor that has the red circle and slash, I just ignore and will never need to connect to it for any purpose, correct? And #2.) in my question, that is basically just a cloud-based service of sorts, correct?
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The github source is the actual code, if you’re a programmer then you can use the source code of the engine to make any modifications you want, most people don’t need it. There’s a node based system in UE4 called Blueprints that are an alternative to doing many of the things you would do with code, but it’s within the editor and it’s much easier to understand.
Source control allows you to back up your project and more easily work in a group. It can be used for code, but it can also be used for your regular game project files as well. You could use Github or Perforce for doing source control.