Ast\_helper.Opn(3) OCaml library Ast\_helper.Opn(3)

# [NAME](#NAME)

Ast\_helper.Opn - Opens

# [Module](#Module)

Module Ast\_helper.Opn

# [Documentation](#Documentation)

Module **Opn**  
: **sig end**

Opens

*val mk* : **?loc:Ast\_helper.loc ->** **?attrs:Ast\_helper.attrs ->** **?docs:Docstrings.docs ->** **?override:Asttypes.override\_flag -> 'a -> 'a Parsetree.open\_infos**

2026-09-04 OCamldoc

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Document: Ast_helper.Opn(3o) from ocaml 5.5.1-r0 (Chainguard OS)
Source: https://github.com/ocaml/ocaml