src/doc/rust-by-example/src/mod.md

   1 # Modules
   2
   3 Rust provides a powerful module system that can be used to hierarchically split
   4 code in logical units (modules), and manage visibility (public/private) between
   5 them.
   6
   7 A module is a collection of items: functions, structs, traits, `impl` blocks,
   8 and even other modules.