An example of Machinecode. Usually shows up in a typewriter font like courier. Strongly emphasised text. Usually shows up in bold. Usually rendered in italics.
Text appears in italics.
Use it in the end of the document to display the authors email address, for example. Temporarily turn off the HTML and displays the source, including linebreaks and multiple spaces. Make the browser to display the text as it appears in the HTML code, including linebreaks and multiple spaces. Used to make blinking text. Some people like it, some people does not.