Under Unix the flag {\tt wxEXEC\_MAKE\_GROUP\_LEADER} may be used to ensure
that the new process is a group leader (this will create a new session if
needed). Calling \helpref{wxKill}{wxkill} passing wxKILL\_CHILDREN will
-will kill this process as well as all of its children (except those which have
+kill this process as well as all of its children (except those which have
started their own session).
Finally, you may use the third overloaded version of this function to execute