\docparam{id}{An identifier for the panel. A value of -1 is taken to mean a default.}
\docparam{pos}{The panel position. A value of (-1, -1) indicates a default position, chosen by
-either the windowing system or wxWindows, depending on platform.}
+either the windowing system or wxWidgets, depending on platform.}
\docparam{size}{The panel size. A value of (-1, -1) indicates a default size, chosen by
-either the windowing system or wxWindows, depending on platform.}
+either the windowing system or wxWidgets, depending on platform.}
\docparam{style}{The window style. See \helpref{wxPanel}{wxpanel}.}