> For the complete documentation index, see [llms.txt](https://read.bookofdefold.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://read.bookofdefold.com/defold-a-z.md).

# Defold A-Z

- [What is Defold?](https://read.bookofdefold.com/defold-a-z/what-is-defold.md)
- [Why Defold?](https://read.bookofdefold.com/defold-a-z/why-defold.md)
- [Defold History](https://read.bookofdefold.com/defold-a-z/defold-history.md)
- [Editor Tour](https://read.bookofdefold.com/defold-a-z/editor-tour.md): A guided tour through the features of the Defold Editor.
- [File Formats](https://read.bookofdefold.com/defold-a-z/filetypes.md): A list of all file types related to working with Defold.
- [game.project](https://read.bookofdefold.com/defold-a-z/game.project.md): Description of all features related to the game.project master project file.
- [Defold Tips](https://read.bookofdefold.com/defold-a-z/defold-tips.md)
- [Anchored GUIs](https://read.bookofdefold.com/defold-a-z/defold-tips/anchored-guis.md): Do you want groups of GUI elements to be anchored to a corner of your game's screen? You'll need to do something which may not be obvious to you at first to make the GUI elements look right.
- [GUIs for Window Size](https://read.bookofdefold.com/defold-a-z/defold-tips/guis-for-window-size.md): Reference your game's window size when editing a collection.
- [Pixel Art Assets](https://read.bookofdefold.com/defold-a-z/defold-tips/pixel-art-assets.md)
- [Lua Tips](https://read.bookofdefold.com/defold-a-z/lua-tips.md)
- [Lua Tables](https://read.bookofdefold.com/defold-a-z/lua-tips/lua-tables.md): Learn useful information about Lua Tables!
- [About math.random()](https://read.bookofdefold.com/defold-a-z/lua-tips/about-math.random.md)
- [Randomly 1 or -1](https://read.bookofdefold.com/defold-a-z/lua-tips/randomly-1-or-1.md)
- [Lua Modules](https://read.bookofdefold.com/defold-a-z/lua-tips/lua-modules.md): How to create and use Lua modules.
- [Global Scope](https://read.bookofdefold.com/defold-a-z/lua-tips/global-scope.md)
- [Running Projects](https://read.bookofdefold.com/defold-a-z/running-projects.md)
- [Bundling Projects](https://read.bookofdefold.com/defold-a-z/bundling-projects.md)
- [Releasing Projects](https://read.bookofdefold.com/defold-a-z/releasing-projects.md)
- [Command Line Tools](https://read.bookofdefold.com/defold-a-z/command-line-tools.md)
- [Debugging Projects](https://read.bookofdefold.com/defold-a-z/debugging-projects.md)