Themes and templates in Radio are the two features that control the presentation of your blog. Each page you see is composed of many templates. A template is just an HTML file with some non-HTML tags to indicate Radio-specific elements such as entries and dates. Where these elements exist, Radio, when posting your blog entry, inserts the content represented by those elements. A theme is a collection of templates that has a consistent look and feel.
The non-HTML tags are called macros. A macro corresponds to functionality within Radio, generally written in UserTalk, that is inserted into your blog when your page is published. Macros add additional functionality such as enabling comments on your blog, adding a list of recent blog posts and more. While changing your theme involves only a few mouse clicks, editing templates to add macros is much harder.
As with other blogging systems, adding macros requires that you understand HTML, because the macros are inserted directly into HTML “chunks” stored in Radio.
Use these steps to change your overall theme.
Click the Themes link on the Radio command bar at the top of the screen.
Select a theme to use by clicking on the radio button to its left.
Confirm that you really do want to replace your existing theme. This is important because changing your theme eliminates all customizations to your current theme. Be careful that you don’t lose something important!
To save your existing theme changes, ...