Docs updated to 2024-03-02

Author: ntoll

docs/user-guide/builtins.md

@@ -193,6 +193,20 @@ response = await fetch("https://example.com", method="POST", body="HELLO").text(
     bug). However, you could use a pass-through proxy service to get around
     this limitation (i.e. the proxy service makes the call on your behalf).
 
+### `pyscript.ffi.to_js`
+
+A utility function to convert Python references into their JavaScript
+equivalents. For example, a Python dictionary is converted into a JavaScript
+object literal (rather than a JavaScript `Map`).
+
+### `pyscript.ffi.create_proxy`
+
+A utility function explicitly for when a callback function is added via an
+event listener. It ensures the function still exists beyond the assignment of
+the function to an event. Should you not `create_proxy` around the callback
+function, it will be immediately garbage collected after being bound to the
+event.
+
 ## Main-thread only features
 
 ### `pyscript.PyWorker`

docs/user-guide/dom.md

@@ -68,6 +68,10 @@ equivalent values: `["hello", 1, 2, 3]`.
     instantiation very differently. By explicitly calling the JavaScript
     class's `new` method PyScript both signals and honours this difference.
 
+Should you require lower level API access to FFI features, you can find such
+builtin functions under the `pyscript.ffi` namespace in both Pyodide and
+MicroPython. The available functions are described in our section on
+[builtin helpers](../builtins).
 
 ## PyDom