In many cases it is convenient to indicate directly how the text is to be rendered, e.g. as italic, bold, underline or strike-through:
These tags may be nested to combine effects, e.g. bold-italic-fixed-pitch text, and should be considered as hints rather than as binding obligations on the browser, e.g.
Some <B><I><TT>bold italic fixed pitch text</TT></I></B>.
.