This resource provides the following Mozilla Ubiquity commands, which are compatible with the 0.5 parser:

• pydoc - query the python documentation at http://docs.python.org.
  Example: launch ubiquity and type "pydoc os.path.join", which will query the online python documentation for information about os.path.join. This is nearly equivalent to typing "pydoc os.path.join" into a shell.
• wayback - view selected URL in the Internet Archive wayback machine.
  Example: click on the current page's URL in the location bar to make the URL your current selection, then launch ubiquity and type "wayback". Since your selection contains the current URL, you can view previous versions of the current URL in the wayback machine. Or, you can simply highlight URLs within HTML pages.