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doc/src/language/modules/index.md

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+Modules
+=======
+
+{{#include ../../links.md}}
+
+Rhai allows organizing code (functions, both Rust-based or script-based, and variables) into _modules_.
+Modules can be disabled via the [`no_module`] feature.
+
+A module is of the type `Module` and encapsulates a Rhai script together with the functions defined
+by that script.
+
+The script text is run, variables are then selectively exposed via the [`export`] statement.
+Functions defined by the script are automatically exported.
+
+Modules loaded within this module at the global level become _sub-modules_ and are also automatically exported.
+
+Other scripts can then load this module and use the variables and functions exported
+as if they were defined inside the same script.