MSP Sample Pages

The following is an intentional error:
Error encountered; please report this error to Odo.
Error was: E_VARNF (Variable not found); value: 0
You can cut-and-paste the following:
#9051:_render_page (this == #9051), line 10: Variable not found
... called from #300:tell_www_page (this == #9051), line 9
... called from #80:serve_page (this == #80), line 42
... called from #81:do_GET (this == #7027), line 12
... called from #81:do_null_command (this == #7027), line 9
... called from #80:do_null_command (this == #80), line 1
(end of traceback)