You type the text in the Composer window and then enhance it. The default setting for the text is normal text.
Composer operates on the same principles as a word processor.
WordPad is recommended, rather than NotePad. The easiest way to use Composer is to type the text and then go back and format it. As you become familiar with Composer you may decide to do some formatting as you type, but Composer works better if you type the text, go beyond the text you want to format, and then go back to format text. Focus on the content and then format it. If you want to place a link on the page, type the name of the link.