Return a new file object opened in update mode (\samp{w+}). The file
has no directory entries associated with it and will be automatically
deleted once there are no file descriptors for the file.
-Availability: \UNIX{}.
+Availability: \UNIX{}, Windows.
\end{funcdesc}
filename. Applications are responsible for properly creating and
managing files created using paths returned by \function{tempnam()};
no automatic cleanup is provided.
+Availability: \UNIX, Windows.
\end{funcdesc}
\begin{funcdesc}{tmpnam}{}
responsible for properly creating and managing files created using
paths returned by \function{tmpnam()}; no automatic cleanup is
provided.
+Availability: \UNIX, Windows.
\end{funcdesc}
\begin{datadesc}{TMP_MAX}