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 tags are the building blocks of HTML. They are used to define the HTML elements that should appear on a web page.Without HTML tags, you wouldn't have an HTML page. Virtually every web page contains HTML tags (even if the website also uses other programming languages).TML tags are the building blocks of HTML. They are used to define the HTML elements that should appear on a web page.