This document provides instructions for using CoffeeScript, a programming language that compiles to JavaScript. It can be installed using npm or brew and commands like "coffee" allow files to be compiled and run. CoffeeScript uses a different syntax than JavaScript but has the same semantics and functionality without adding new functions.

1. CoffeeScript
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2. Compile to JS
• Different syntax
• Some new keywords
• Same semantics
• No new functions

3. Install
• npm install coffee-script
• (brew install node)
• (install npm manually)
• brew install coffee-script

4. Just to try
• CoffeeScript official web page

5. Command
• coffee {file}
• compile & run (on node)
• coffee -c {coffee}
• compile & save
• coffee -cp {coffee}
• compile & show