-or dialog box using the window manager (X) or system menu (Windows). It is
-called via the \helpref{wxWindow::Close}{wxwindowclose} function, so
-that the application can also invoke the handler programmatically.
+or dialog box using the window manager (X) or system menu (Windows). It can
+also be invoked by the application itself programmatically, for example by
+calling the \helpref{wxWindow::Close}{wxwindowclose} function.