> For the complete documentation index, see [llms.txt](https://floip.gitbook.io/flow-specification/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://floip.gitbook.io/flow-specification/drafts-1.0.0-rc3-1/layers.md).

# Layers

## Contents

1. [Layer 1: Core](/flow-specification/drafts-1.0.0-rc3-1/layers/blocks.md)
2. [Layer 2: Console IO](/flow-specification/drafts-1.0.0-rc3-1/layers/blocks-1.md)
3. [Layer 3: Mobile Primitives](/flow-specification/drafts-1.0.0-rc3-1/layers/blocks-2.md)
4. [Layer 4: Smart Devices](/flow-specification/drafts-1.0.0-rc3-1/layers/blocks-3.md)