Issue #28496: Mark up constants 0, 1 and -1 that denote return values or
special input values as literal text.
diff --git a/Doc/c-api/import.rst b/Doc/c-api/import.rst
index 6f5678c..f0ea227 100644
--- a/Doc/c-api/import.rst
+++ b/Doc/c-api/import.rst
@@ -66,7 +66,7 @@
.. versionchanged:: 2.6
The function is an alias for :c:func:`PyImport_ImportModuleLevel` with
- -1 as level, meaning relative import.
+ ``-1`` as level, meaning relative import.
.. c:function:: PyObject* PyImport_ImportModuleLevel(char *name, PyObject *globals, PyObject *locals, PyObject *fromlist, int level)