@<base-type>.
\end{describe}
+\begin{describe}{cls}{alignas-storage-specifier () \&key :alignment}
+ The class of @|_Alignas| storage specifiers; an instance denotes the
+ specifier @|_Alignas(@<alignment>)|. The @<alignment> parameter may be any
+ printable object, but is usually a string or C fragment.
+
+ The storage specifier form @|(alignas @<alignment>)| returns a storage
+ specifier @|_Alignas(@<alignment>)|, where @<alignment> is evaluated.
+\end{describe}
+
\subsection{Leaf types} \label{sec:clang.c-types.leaf}