Start a text editor that has formatting functions of the text - for example, Microsoft Office Word. Load a document in which you want to highlight by underlining the letter, word, or any part of the text to call the appropriate dialog, you can use ctrl + o. Find in the text the desired track and select it. Then on the Main tab, click the icon underscore - it shows an underlined letter "H". If you need any non-standard option to underline, then click the selected snippet, right-click and select the context menu "Font". In the window that opens has a drop-down list Underline - select any of the 17 options, and then click "OK".
If you want to emphasize text in an HTML document, the code necessary to add the appropriate tags. Before the first character of the fragment that you want to emphasize must be the opening tag <u> and underlined sign, it is necessary to insert a closing tag </u>. For example:
<p>This is a paragraph with <u>underlined</u> text.</p>
When used to edit pages in the content management system required tags are inserted automatically if the edit to produce in visual mode (WYSIWYG mode). In this case, it is sufficient to highlight the desired track and click the underline button in the editor bar.
If you highlight words or letters should be in the message sent to a forum or chat, find the appropriate button in the edit panel of the message. Sometimes it is only present in the extended the edit form. As a rule, the icon depicts the English letter U is underlined - click it, select the desired text fragment.