os.startfile() documentation, based on text from Tim Peters.
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index 40e9573..e4171cf 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -940,6 +940,24 @@
\versionadded{1.5.2}
\end{datadesc}
+\begin{funcdesc}{startfile}{path}
+Start a file with its associated application. This acts like
+double-clicking the file in Windows Explorer, or giving the file name
+as an argument to the DOS \program{start} command: the file is opened
+with whatever application (if any) its extension is associated.
+
+\function{startfile()} returns as soon as the associated application
+is launched. There is no option to wait for the application to close,
+and no way to retrieve the application's exit status. The \var{path}
+parameter is relative to the current directory. If you want to use an
+absolute path, make sure the first character is not a slash
+(\character{/}); the underlying Win32 \cfunction{ShellExecute()}
+function doesn't work it is. Use the \function{os.path.normpath()}
+function to ensure that the path is properly encoded for Win32.
+Availability: Windows.
+\versionadded{2.0}
+\end{funcdesc}
+
\begin{funcdesc}{system}{command}
Execute the command (a string) in a subshell. This is implemented by
calling the Standard C function \cfunction{system()}, and has the