diff --git a/Doc/api/concrete.tex b/Doc/api/concrete.tex
index eaa2d59..2c4d45f 100644
--- a/Doc/api/concrete.tex
+++ b/Doc/api/concrete.tex
@@ -850,6 +850,11 @@
   character.
 \end{cfuncdesc}
 
+\begin{cfuncdesc}{int}{Py_UNICODE_ISWIDE}{Py_UNICODE ch}
+  Returns 1/0 depending on whether \var{ch} is a wide or full-width
+  character.
+\end{cfuncdesc}
+
 These APIs can be used for fast direct character conversions:
 
 \begin{cfuncdesc}{Py_UNICODE}{Py_UNICODE_TOLOWER}{Py_UNICODE ch}
@@ -908,6 +913,10 @@
   Return the length of the Unicode object.
 \end{cfuncdesc}
 
+\begin{cfuncdesc}{int}{PyUnicode_GetWidth}{PyObject *unicode}
+  Return the fixed-width representation length of the Unicode object.
+\end{cfuncdesc}
+
 \begin{cfuncdesc}{PyObject*}{PyUnicode_FromEncodedObject}{PyObject *obj,
                                                       const char *encoding,
                                                       const char *errors}