These pages contain the F# manual, describing the current version of F# via tutorial descriptions and informal specifications.

• Getting Started - "Hello World" in F#.

• A Quick Tour - introduction to F# values, types, pattern matching and modules.

• F# Command Line - fsc.exe, the command line compiler.

• Debugging F# Code - tips on debugging.

• C# from F# - how to call C# and use the .NET APIs.

• F# from C# - how to call F# from other .NET languages.

• Advanced Topics - including namespaces and compilation units, reactive recursion, objects and arrays.

• Language Specification (PDF) - informal language specification for F#.

• F# and OCaml - differences in detail.

• Libraries - fslib (F# built-ins) and mllib (OCaml compatibility library).