regarding documentation, you will need to uncompress such files before
building or executing them.
+The examples provided here typically show a minimal implementation of
+the feature(s) they are demonstrating. There are examples of more
+complete (mini) applications, available in the /wxPython/samples and
+/demos directories of the wxWidgets cvs repository (which is browsable
+via http://cvs.wxwidgets.org), or of course you can always apt-get the
+source of any wx using package for some less contrived examples of
+real world wx applications.
+
Ron