Chapter 1: Getting Started

• Why Atom?
• Installing Atom
• Atom Basics
• Summary

Chapter 2: Using Atom

• Atom Packages
• Moving in Atom
• Atom Selections
• Editing and Deleting Text
• Find and Replace
• Snippets
• Autocomplete
• Folding
• Panes
• Pending Pane Items
• Grammar
• Version Control in Atom
• GitHub package
• Writing in Atom
• Basic Customization
• Summary

Chapter 3: Hacking Atom

• Tools of the Trade
• The Init File
• Package: Word Count
• Package: Modifying Text
• Package: Active Editor Info
• Creating a Theme
• Creating a Grammar
• Creating a Legacy TextMate Grammar
• Publishing
• Iconography
• Debugging
• Writing specs
• Handling URIs
• Cross-Platform Compatibility
• Converting from TextMate
• Hacking on Atom Core
• Contributing to Official Atom Packages
• Creating a Fork of a Core Package in atom/atom
• Maintaining a Fork of a Core Package in atom/atom
• Summary

Chapter 4: Behind Atom

• Configuration API
• Keymaps In-Depth
• Scoped Settings, Scopes and Scope Descriptors
• Serialization in Atom
• Developing Node Modules
• Interacting With Other Packages Via Services
• Maintaining Your Packages
• How Atom Uses Chromium Snapshots
• Summary

Appendix A: Resources

• Glossary

Appendix B: FAQ

• Is Atom open source?
• What does Atom cost?
• Atom in the cloud?
• What's the difference between an IDE and an editor?
• How can I tell if subpixel antialiasing is working?
• Why is Atom deleting trailing whitespace? Why is there a newline at the end of the file?
• What does Safe Mode do?
• I’m using an international keyboard and keys that use AltGr or Ctrl+Alt aren’t working
• I’m having a problem with Julia! What do I do?
• I’m getting an error about a “self-signed certificate”. What do I do?
• I’m having a problem with PlatformIO! What do I do?
• How do I make Atom recognize a file with extension X as language Y?
• How do I make the Welcome screen stop showing up?
• Where did the “Show Tree View On Right Side” option go?
• How do I preview web page changes automatically?
• I am unable to update to the latest version of Atom on macOS. How do I fix this?
• I’m trying to change my syntax colors from styles.less, but it isn’t working!
• I want Ctrl-Tab to work like it used to. How do I do that?
• How do I build or execute code I've written in Atom?
• How do I uninstall Atom on macOS?
• macOS Mojave font rendering change
• Why does macOS say that Atom wants to access my calendar, contacts, photos, etc.?

Appendix C: Shadow DOM

• Removing Shadow DOM styles

Appendix D: Upgrading to 1.0 APIs

• Upgrading Your Package
• Upgrading Your UI Theme Or Package Selectors
• Upgrading Your Syntax Theme

Appendix E: Atom server-side APIs

• Atom package server API
• Atom update server API