Appendix The appendix contains some additional information that covers topics in more depth than what is already described in the main section. OS X help Working with Git Tower GRUNT install on OSX Npm install on OSX Creating a SSH Public Key on OSX Microsoft Windows help SSH and Git tools on Windows Cloning with SourceTree on Windows Troubleshooting for Windows Linux/Unix help Setting up TYPO3 manually under Linux Creating a SSH Public Key on Unix/Linux Coding Guidelines Commit Hooks Commit Message rules for TYPO3 CMS Composer Extension scanner How to deprecate classes, methods, arguments and hooks in the TYPO3 core PhpStorm: Setup TYPO3 Core contribution setup with DDEV Setting up TYPO3 manually Slack