until the program terminates) or asynchronously (notification will come later).
It also shows how to capture the output of the child process in both
-synchronous and asynchronous cases.
+synchronous and asynchronous cases and how to kill the processes with
+\helpref{wxProcess::Kill}{wxprocesskill} and test for their existence with
+\helpref{wxProcess::Exists}{wxprocessexists}.
\subsection{Scroll subwindow sample}\label{samplescrollsub}