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.
The way semantic markup is used throughout a site, including h1, h2, and h3 tags, helps us to understand the priorities of a siteâs contentâ. h1, h2 HTML Headings and SEO, 9.5 out of 10 based on 44 ratings. Headings are used to structure the contents of a document by specifying a hierarchy of sections.