[Radiant] "Shards" extension questions

[Richard Hurt]

I have seen quite a bit of traffic related to the "shards" extension lately
and was wondering what it does?  From what I can gather it allows easier
extension of the administration pages.  Is that correct?

I wanted to know more about it so I tried to install it, however I now get
the following error when trying to hit the /admin pages:
NoMethodError in Admin/page#index

Showing *vendor/extensions/shards/app/views/admin/page/index.rhtml* where
line *#3* raised:

undefined method `render_region' for #<#<Class:0xb660c7bc>:0xb660c794>

Extracted source (around line *#3*):

1: <% include_javascript 'sitemap' -%>
2: <h1>Pages</h1>
3: <%= render_region :top %>
4: <table id="site-map" class="index" cellpadding="0" cellspacing="0"
border="0">
5:   <thead>
6:     <tr>


Does anyone have any clues on this?  There were no INSTALL directions that I
could find so I ran the standard "rake db:extension" just for fun.  Also,
being a complete newbie, I wanted to run the tests and create the
documentation but couldn't figure out how to it properly.  I ran "rake test
and it executed the tests for all of my extensions (even my home grown
development ones).  Obviously there were lots of errors (and that's OK)
however I couldn't pick out the shards tests very easily.  Is there a way to
run just one test suite?  And how do you create the docs for extensions?

Thanx!
  Richard