This is a simple environment for experimenting with Javascript. The panel on the left is a code editor where you can define functions and variables. The panel on the right is called a REPL, which is an acronym for Read, Eval, Print Loop. You can type Javascript expressions in the REPL and hit return and it will evaluate them and print the resulting value. If you are logged in, changes you make in the editor will be saved.

Put definitions here.

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