1. Introduction
2. 1. Steel
   1. 1.1. Features
   2. 1.2. Creating values
   3. 1.3. Definitions and expressions
   4. 1.4. Collections
   5. 1.5. Licensing
3. 2. Getting Started
   1. 2.1. Online Playground
   2. 2.2. Using Steel on its own
   3. 2.3. Using Rust in Steel
   4. 2.4. Embedding Steel in Rust
4. 3. The Rust Engine API
   1. 3.1. Registering functions
   2. 3.2. Embedding values
5. 4. Language Reference
   1. 4.1. Keywords
   2. 4.2. Macros
   3. 4.3. Contracts
   4. 4.4. Transducers
   5. 4.5. Modules
   6. 4.6. Functions
      1. 4.6.1. Logging
      2. 4.6.2. Built ins
         1. 4.6.2.1. steel/base
         2. 4.6.2.2. steel/bytevectors
         3. 4.6.2.3. steel/constants
         4. 4.6.2.4. steel/core/option
         5. 4.6.2.5. steel/core/result
         6. 4.6.2.6. steel/core/types
         7. 4.6.2.7. steel/equality
         8. 4.6.2.8. steel/filesystem
         9. 4.6.2.9. steel/hash
         10. 4.6.2.10. steel/identity
         11. 4.6.2.11. steel/io
         12. 4.6.2.12. steel/immutable-vectors
         13. 4.6.2.13. steel/json
         14. 4.6.2.14. steel/lists
         15. 4.6.2.15. steel/meta
         16. 4.6.2.16. steel/numbers
         17. 4.6.2.17. steel/ord
         18. 4.6.2.18. steel/ports
         19. 4.6.2.19. steel/process
         20. 4.6.2.20. steel/random
         21. 4.6.2.21. steel/sets
         22. 4.6.2.22. steel/streams
         23. 4.6.2.23. steel/strings
         24. 4.6.2.24. steel/symbols
         25. 4.6.2.25. steel/syntax
         26. 4.6.2.26. steel/time
         27. 4.6.2.27. steel/transducers
         28. 4.6.2.28. steel/vectors
         29. 4.6.2.29. steel/tcp
      3. 4.6.3. Stdlib
         1. 4.6.3.1. steel/async
         2. 4.6.3.2. steel/iterators
         3. 4.6.3.3. steel/option
         4. 4.6.3.4. steel/result
         5. 4.6.3.5. steel/sync
         6. 4.6.3.6. #%private/steel/contract
         7. 4.6.3.7. #%private/steel/control
         8. 4.6.3.8. #%private/steel/match
         9. 4.6.3.9. #%private/steel/ports
         10. 4.6.3.10. #%private/steel/print
         11. 4.6.3.11. #%private/steel/reader
         12. 4.6.3.12. #%private/steel/stdlib
6. 5. Common Patterns
   1. 5.1. Context variables
   2. 5.2. Async
7. 6. Memory Management