diff --git a/doc/main/micropython/micropython.rst b/doc/main/micropython/micropython.rst
index 99c2482..0dcc304 100644
--- a/doc/main/micropython/micropython.rst
+++ b/doc/main/micropython/micropython.rst
@@ -2,3 +2,19 @@
 ===========================================
 
 .. automodule:: micropython
+    :no-members:
+
+.. autofunction:: micropython.const
+
+.. autofunction:: micropython.opt_level
+
+.. autofunction:: micropython.mem_info
+
+.. autofunction:: micropython.qstr_info
+
+.. autofunction:: micropython.stack_use
+
+.. autofunction:: micropython.kbd_intr
+
+
+
diff --git a/src/micropython/__init__.py b/src/micropython/__init__.py
index b8e1b1e..3b45de9 100644
--- a/src/micropython/__init__.py
+++ b/src/micropython/__init__.py
@@ -9,15 +9,10 @@
 Access and control MicroPython internals.
 """
 
-from typing import Any, Literal, TypeVar, overload
-
-TConst = TypeVar("TConst", int, float)
-"""
-Allowable types for :meth:`const`.
-"""
+from typing import Any, Literal, Union, overload
 
 
-def const(expr: TConst) -> TConst:
+def const(expression: Union[int, float]) -> Union[int, float]:
     """
     Used to declare that the expression is a constant so that the compile can
     optimise it.  The use of this function should be as follows::
diff --git a/src/usys/__init__.py b/src/usys/__init__.py
index 2d9e5a6..f400afc 100644
--- a/src/usys/__init__.py
+++ b/src/usys/__init__.py
@@ -22,7 +22,7 @@ Stream object that receives input from a connected terminal, if any.
 Writing may modify newline characters. Use ``usys.stdin.buffer`` instead if
 this is undesirable.
 
-Also see :meth:`micropython.kbd_intr` to disable ``KeyboardInterrupt`` if you
+Also see :func:`micropython.kbd_intr` to disable ``KeyboardInterrupt`` if you
 are passing binary data via ``stdin``.
 """