1. Getting started
2. 1. A command line app in 15 minutes
3. 1. 1.1. Project setup
   2. 1.2. Parsing command line arguments
   3. 1.3. First implementation
   4. 1.4. Nicer error reporting
   5. 1.5. Output for humans and machines
   6. 1.6. Testing
   7. 1.7. Packaging and distributing a Rust tool
4. 2. In-depth topics
5. 1. 2.1. Signal handling
   2. 2.2. Using config files
   3. 2.3. Exit codes
   4. 2.4. Communicating with humans
   5. 2.5. Communicating with machines
   6. 2.6. Rendering documentation for your CLI apps
6. 3. Resources