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+Basic Module ABI
+================
+
+There are many different ways to use Wasm modules, and many different
+conventions, language-specific ABIs, and toolchain-specific ABIs. This
+document describes ABI features intended to be common across all ABIs.
+
+## The `_initialize` function
+
+If a module exports a function named `_initialize` with no arguments and no
+return values, and does not export a function named `_start`, the toolchain
+that produced my assume that on any instance of the module, this `_initialize`
+function is called before any other exports are accessed.
+
+This is intended to support language features such as C++ static constructors,
+as well as "top-level scripts" in many scripting languages, which can't use
+the [wasm start function] because they may call imports that need to access
+the module's exports. In use cases that don't need this, the wasm start
+function should be used.
+
+[wasm start section]: https://webassembly.github.io/spec/core/syntax/modules.html#syntax-start