Primer on WordPress content and theme areas
To understand how Themer works, it helps to understand some aspects of the WordPress architecture.
In WordPress, a post or page has a single content area, and you fill in that content using the WordPress text editor. In the following diagrams, boxes shaded in gray are controlled by the active theme, whereas the content area is the place where contributors enter content on individual posts or pages.
Traditionally, if you wanted to add a more complex layout to the content area, you'd add a wid...