This is an example of the full-width, single column layout. This page uses the div ID "contentfull" and has no sidebar.
The layout can be changed by editing div ID:s in the HTML code. This layout uses the div ID "content" together with a div with ID "sidebar". Inside the content div, there are two other div containers with the ID:s "left" and "right" which splits the content area in two halves. If you want a plain 2-column layout, just remove the two div:s and put all content directly in the content div. To get a single-column layout, rename the content div to id="contentfull" and remove the sidebar div and your content will fill the entire width of the layout.