I find the Blogger.com platform interesting and want to better understand their templating engine.
As a first step I want to build the minimal template that Blogger.com will accept and eventually add structure, content, style and behaviour so the site looks like I want it.
The minimal template requirements and markup information I will use Template of Doom, as well as Blogger.com's official help.
Blogger.com's editor validates your code before allowing you to save. If there is a syntax error, it won't save. If you have widgets of a certain type and don't include certain corresponding code, the editor will add the boilerplate code for that widget type.
The minimal possible template is: