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+The computing environment is where we interact with simulations: it can be a personal computer or a remote super-cluster. Setting up the environment so that it does not get in the way is of the utmost importance.
+
+## Table of contents
+- [Operating System](Operating-System)
+- [Working with code](Working-with-code)
+- [Backups and Security](Backups-and-Security)
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