8.4 Local opens for patterns

For patterns, local opens are limited to the module-path.( pattern) construction. This construction locally open the module referred to by the module path module-path in the scope of the pattern pattern. When the body of a local open pattern is delimited by [ ], [| |], or { }, the parentheses can be omitted. For example, module-path.[ pattern] is equivalent to module-path.([ pattern]), and module-

[gam-22]

調べ方が悪いのか、OCamlのParserをググってもコレしか出ない。