It is common practice, however, to specify all tags in uppercase because they are easier to spot when editing an HTML document. The following sections describe the use of commonly used HTML tags. If HTML is new to you, I suggest that you read each section in sequence. If you are interested in learning about a particular feature then you can use one of the following links. This is useful for program listings, among other things.
Most browsers generally change the margins for the quotation to separate it from surrounding text.
Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary sentences, for the same reason that a drawing should have no unnecessary lines and a machine no unnecessary parts. It is usually near the end of a document. See BR above to see how to format postal addresses.