Analysis of DrupalSN.com home page

I posted this originally in the Learning Drupal section of DrupalSN.com, though re-posting here for the people learning at my site. Here's my analysis of how DrupalSN.com's home page is likely put together. I'm sure Tom (the owner of DrupalSN) can fill in a few blanks, but I'm relatively sure this is very close to how it works :)

Regions of the left column

$content_top (where blocks could be assigned to have them appear "above" the Body content of the node, if there is any. There are no blocks assigned here for the front page. This region may not be included if the site had no use for it).

$content (the standard $content variable responsible for printing out essentially all content of every page in Drupal, whatever it may be given the current page being viewed. Since in this particular case there is nothing for Drupal to print on this page, it returns some div tags but no visible content).

$content_bottom (where blocks could be assigned to have them appear "below" the Body content of the node, if there is any. In the case of the Home page, there is nothing in $content_top, and $content is visually empty since the Body of the node is empty. $content_bottom on the other hand has at least 4 separate blocks assigned to it, and set to display only on the <front> path).

Most of the blocks are generated by Views module, and in most cases using a "Field" row style, not nodes.

Region for the right sidebar/column

The rest of the page is the Sidebar Right region (in Drupal 5 this is $sidebar_right, while in Drupal 6 this is called $right):

Hope this helps :)