Paragraph tags allow you to format a paragraph of text. Character tags, on the other hand, allow you to format a character or characters within a paragraph without changing the entire paragraph. Take a look at any document and count the different tags that you see. Tags provide consistency . If you work on a long document, work on a document over a long period of time, or work with other people on the same document, it's difficult to ensure that textual elements look the same throughout.
Tags make it easy to maintain consistency.
Of course, when you create a first-draft, it's hard to foresee all the tags you may need. But, instead of manually changing a paragraph to be indented and to use a smaller type size, you can name the paragraph format as a tag. In simple documents, such as letters and memos, you press the Enter key twice to create a blank line between paragraphs. However, when you create a professionally designed document, you rarely press Enter to create space between textual elements. You also rarely use the spacebar to create horizontal space, or even use tabs.