Wipe, in a computing context, means  to render all data on a hard drive unreadable. The term is often used in reference to making data stored on a computer, smartphone or tablet inaccessible before disposing of the device.
A semantic HTML tag is one that defines a meaning to the enclosed content that a computer can be programmed to understand. In most cases, browsers create some visual difference to content in semantic tags, for example, content in the CODE element is usually displayed in a monospaced font. But this is not a requirement. Many people feel that semantic HTML elements are a waste of bandwidth.
HTML - Font. The <font> tag provides no real functionality by itself, but with the help of a few attributes, this tag is used to change the style, size, and color of HTML text elements. The size, color, and face attributes can be used all at once or individually, providing users with the ability to create dynamic font styles for any HTML element.